PTO Manual of Classification for US patents

PTO Manual of Classification for US patents

What follows are the subclasses from one class of the Manual of Classification for US patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retrieve patent titles by entering the class/subclass in the box below.


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363-131 121-55A 14-.5
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Class Number: 526
 Class Title: SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS
              520 SERIES

Subclass  Subclass
Number    Title

  *       SYNTHETIC RESINS (Class 520, Subclass 1)
  59      .EFFECTING A CHANGE IN A POLYMERIZATION PROCESS IN RESPONSE TO A
            MEASUREMENT OR TEST
  60      ..Change responsive to composition property other than density
  61      ..Change responsive to pressure or temperature
  62      .POLYMERIZING IN REACTOR OF SPECIFIED MATERIAL, OR IN REACTOR IN
            WHICH SURFACE CONTACTING POLYMERIZING MATERIAL HAS BEEN
            TREATED
  63      .POLYMERIZING IN PRESENCE OF INERT SOLID MASSES SO AS TO HEAT,
            COOL, OR GRIND POLYMERIZING MASS
  64      .POLYMERIZING IN TUBULAR OR LOOP REACTOR
  65      .POLYMERIZING IN TWO OR MORE PHYSICALLY DISTINCT ZONES
  66      ..Adding material to polymerization zone in an incremental or
             sequential manner
  67      .REMOVING AND RECYCLING REMOVED MATERIAL FROM AN ONGOING
            POLYMERIZATION ZONE TO A POLYMERIZATION ZONE
  68      ..Recycling monomer
  69      ..Recycling catalyst
  70      ..Recycling diluent
  71      .REMOVING ONLY NONPOLYMERIZED OR NONPOLYMERIZABLE MATERIAL
            DURING POLYMERIZATION PROCESS
  72      .POLYMERS FROM ONLY ETHYLENIC MONOMERS OR PROCESSES OF
            POLYMERIZING, POLYMERIZABLE COMPOSITIONS CONTAINING ONLY
            ETHYLENIC MONOMERS AS REACTANTS OR PROCESSES OF PREPARING
  73      ..Polymerization involving two or more specified temperature or
             pressure conditions
  74      ..Utilizing material during polymerization to prevent or remove
             reactor buildup, e.g., fouling, clogging, etc.
  75      ..Including step of synthesis of monomer or pre-polymer
  76      ...Polymerizable material derived from petroleum fraction
  77      ..Including step of purifying monomer
  78      ..Adding material to an on-going polymerization reaction, said
             addition being other than the continuous addition of the
             initial charge
  79      ...Adding in an incremental or sequential manner
  80      ....Polymerizing in the presence of water
  81      .....Added material is other than monomer per se, or composition
                containing monomer
  82      ...Adding polymerization inhibitor or terminator, e.g.,
              short-stopper, etc.
  83      ....Added material contains nitrogen compound
  84      ....Added material contains oxygen compound
  85      ....Added material contains sulfur atom
  86      ...Adding catalyst or catalyst component
  87      ...Adding monomer
  88      ..Polymerization involving specified mixing, stirring,
             agitating, or movement of material
  89      ..Polymerizing in the presence of a specified material other
             than monomer
  90      ...Material contains transition metal or compound thereof
  91      ....In presence of waterr
  92      .....Carbon-metal bond
  93      .....Group VIII transition metal (Fe, Co, Ni, Ru, Rh, Pd, Os,
                Ir, Pt)
  94      ......With organo-sulfur compound or organic-transition metal
                 compound containing sulfur atom
  95      ....Material contains transition metal oxide (other than
               peroxide)
  96      .....Contains elemental transition metal or a non-oxide compound
                of a transition metal
  97      ......Contains non-transition elemental metal, hydride thereof,
                 or carbon to non-transition metal atom bond
  98      .....Contains non-metallic halogen-containing material
  99      .....Contains compound containing aluminum to halogen bond and
                wherein the same aluminum atom is not bonded to a hydrogen
                or carbon atom
  100     .....Contains non-metal organic N, O, S or P containing
                compound
  101     .....Two or more transition metal oxides, at least two of said
                oxides being other than oxides of Ti, Zr, Hf, or Th
  102     .....Contains non-transition heavy metal or compound thereof
  103     .....Group VIII metal oxide (Fe, Co, Ni, Ru, Rh, Pd, Os, Ir,
                Pt)
  104     .....Group VIB metal oxide (Cr, Mo, W)
  105     ......Contains non-transition elemental metal, hydride thereof,
                 or nontransition metal to carbon atom bond
  106     ......Metal oxide is of chromium
  107     .....Group IVB metal oxide (Ti, Zr, Hf)
  108     ....Contains one or more elemental transition metal atoms
  109     .....With peroxy compound (-O-O-)
  110     .....With non-transition elemental metal, hydride thereof, or
                carbon to non transition metal atom bond
  111     ......With non-metal P, S, O, or N containing material
  112     .....With transition metal compound
  113     ....Two or more diverse transition metal atoms in distinct
               compounds or in the same compound
  114     .....Contains non-transition elemental metal, hydride thereof,
                or carbon to non transition metal atom bond
  115     ......Contains Group VIII metal atom (Fe, Co, Ni, Ru, Rh, Pd,
                 Os, Ir, Pt)
  116     ......At least one Group IVB metal atom (Ti, Zr, Hf) and at
                 least one Group VB meta l (V, Nb, Ta)
  117     .....Contains Group VIII metal atom (Fe, Co, Ni, Ru, Rh, Pd, Os,
                Ir, Pt)
  118     ....Material contains two or more different compounds of same
               transition metal
  119     .....Contains non-transition elemental metal, hydride thereof,
                or carbon to non-transition metal atom bond
  120     ....Material contains compound of non-transition heavy metal
               wherein non-transition heavy metal is not bonded to hydrogen
               or carbon
  121     .....Contains non-transition elemental metal, hydride thereof,
                or carbon to non-transition metal atom bond
  122     ......Non-transition heavy metal compound is halogen-containing
  123     ....Material contains compound of Group IA (Li, Na, K, Rb, Cs,
               Fr) or Group IIA (Be, Mg, Ca, Sr, Ba, Ra) metal wherein IA
               or IIA metal is not bonded to hydrogen or carbon
  124     .....Contains non-transition elemental metal, hydride thereof,
                or carbon to non-transition metal atom bondd
  125     ......Group IA or Group IIA compound is halogen-containing
  126     ....Material contains silicon atom
  127     .....Contains non-transition free metal, hydride thereof, or
                carbon to non-transition metal atom bond
  128     ......Silicon present in organic non-metal compound
  129     ......Silicon present in inorganic oxygen-containing compound
  130     .....Silicon present in inorganic oxygen-containing compound
  131     ....Material contains boron atom
  132     .....Contains non-transition elemental metal, hydride thereof,
                or carbon to non transition metal atom bond
  133     ......Boron compound is halogen-containing
  134     .....Boron compound contains boron bonded to hydrogen or to
                carbon atom
  135     ....With non-metal N, P, O, S, Se, Te, or halogen material other
               than nitrogen gas
  136     .....Contains non-transition elemental metal, hydride thereof,
                or carbon to non transition metal atom bond
  137     ......Non-metal material is inorganic halogen-containing
                 material
  138     ......Non-metal material is inorganic oxygen-containing
                 material
  139     ......Non-metal material is organic phosphorus-containing
                 compound
  140     ......Non-metal material is organic sulfur-containing compound
  141     ......Non-metal material is organic nitrogen-containing
                 compound
  142     ......Non-metal material is organic oxygen-containing compound
  143     .......Non-metal organic oxygen compound is halogen-containing
  144     ......Non-metal material is organic halogen-containing compound
  145     .....Non-metal phosphorus-containing material
  146     .....Non-metal sulfur-containing material
  147     .....Non-metal nitrogen-containing material
  148     ....Contains two or more diverse non-transition elemental
               metals, different non-transition hydride compounds,
               different carbon to non transition metal compounds, or
               mixture thereof
  149     .....At least one atom of As, Sb, or Bi, in elemental form or
                bonded to hydrogen or carbon atom
  150     .....At least one atom of Ge, Sn, or Pb in elemental form or
                bonded to hydrogen or carbon atom
  151     .....At least one atom of Group IIIA metal (Al, Ga, In, Tl) in
                elemental form or bonded to hydrogen or carbon atom
  152     ......At least one atom of Group IA metal (Li, Na, K, Rb, Cs,
                 Fr) in elemental form or bonded to hydrogen or carbon
                 atom
  153     ......Two or more Group IIIA metals in elemental form or bonded
                 to hydrogen or carbon atom
  154     ....Material contains aluminum compound wherein aluminum atom is
               not bonded to hydrogen or carbon atom
  155     .....Contains non-transition elemental metal, hydride thereof or
                carbon to non transition metal atom bond
  156     ......Inorganic oxygen containing aluminum compound
  157     ......Aluminum trihalide
  158     .......With Group IVB transition metal compound (Ti, Zr, Hf)
  159     ....Material contains non-transition elemental metal, hydride
               thereof, or carbon to non-transition metal atom bond
  160     .....Transition metal bonded to carbon atom
  161     .....Transition metal compound contains P, S, or N atomm
  162     .....Non-transition metal is bonded to carbon atom in compound
                which contains ethylenic unsaturation
  163     .....Non-transition metal hydride or carbon to non-transition
                metal metal atom bond compound contains P, S, or N atom
  164     .....Transition metal is IB, IIIB, VIIB or atomic number 58-71,
                88, 90 or higher
  165     .....Non-transition metal to carbon atom bond compound contains
                at least two atoms of same or different non-transition
                metal
  166     .....Group IVA (Ge, Sn, Pb) or Group VA (As, Sb, Bi) metal is
                bonded to hydrogen or carbon atom
  167     .....Elemental non-transition metal atom
  168     .....Elemental carbon
  169     .....Transition metal is Group VB, VIB or VIII metal
  169.1   ......Transition metal is Group VIII
  169.2   ......Transition metal is vanadium
  169.3   .....At least one monomer is nonhydrocarbon material
  170     ....Transition metal bonded to carbon atom
  171     .....Transition metal is Group VIII (Fe, Co, Ni, Ru, Ph, Pd, Os,
                Ir, Pt)
  172     ....Transition metal compound has at least one atom of P, S, N
               or O therein
  173     ...Material contains elemental alkali metal, hydride thereof, or
              alkali metal to carbon atom bond (Li, Na, K, Rb, Cs, Fr)
  174     ....Contains at least two diverse alkali metal atoms, at least
               one of which is in the form of a free alkali metal, or in
               the form of a hydride, or has an alkali metal to carbon atom
               bond
  175     ....Contains two or more separate chemical entities containing
               atoms of the same alkali metal, with at least one atom in
               elemental form, or in the form of a hydride, or has an
               alkali metal to carbon atom bond
  176     ....Contains heavy metal atom
  177     ....Contains aluminum atom
  178     ....Contains boron or silicon atom
  179     ....Contains phosphorus atom
  180     ....Contains compound of nitrogen
  181     ....Contains oxygen atom
  182     ....Contains halogen atom
  183     ...Material contains metal atom bonded to a carbon atom
  184     ....With free oxygen or peroxy compound (-O-O-)
  185     ....Metal bonded to carbon is aluminum
  186     .....Contains aluminum not bonded to carbon
  187     .....Contains Group IA or IIA atom
  188     .....Contains heavy metal atom
  189     .....Contains P, N, S, or O atom
  190     ....Metal bonded to carbon atom is a heavy metal atom
  191     ...Material contains elemental metal
  192     ...Material contains a heavy metal atom containing organic
              compound
  193     ...Material contains organic compound having a phosphorus atom
  194     ...Material contains Si, Te, Se, or Group VIIIA atom, e.g., He,
              Ne, etc.
  195     ...Material contains boron compound other than boron trihalide
              or non-metal organic complex of boron trihalide
  196     ....Boron bonded to hydrogen or carbon atom compound
  197     .....With free oxygen or peroxy compound
  198     .....Contains P, S, or N atom other than as elemental nitrogenn
  199     ...Material contains polypeptide, e.g., protein, gelatin, etc.
  200     ...Material contains carbohydrate, e.g., starch, sugar, etc.
  201     ...Material contains previously formed normally solid polymer
              which is distinct from polymer to be formed and is a polymer
              formed from at least one ethylenic monomer
  202     ....Normally solid polymer contains free alcohol group or
               alcoholate thereof
  203     ....Normally solid polymer is formed from ethylenically
               unsaturated dicarboxylic acid, ester, salt, or anhydride
               thereof
  204     ...Material contains heterocyclic compound
  205     ....Sulfur and nitrogen together in a single ring
  206     ...Material contains halogenated hydrocarbon wherein at least
              one halogen atom is other than chlorine, and mixtures of
              water and a halogenated hydrocarbon one ethylenic monomer
  207     ...Material contains water and a hydrocarbon
  208     ...Material contains aldehyde or ketone or polymeric reaction
              product thereof, e.g., urea-formaldehyde, etc.
  209     ...Material contains ether
  210     ...Material contains alcohol or alcoholate
  211     ....Alcohol or alcoholate has at least one atom of nitrogen or
               sulfur chemically combined therewith
  212     ....Alcohol contains a single hydroxy group or is alcoholate
               thereof
  213     ...Material contains carboxylic acid, salt, ester, or anhydride
              thereof
  214     ....Derived from carboxylic acid containing at least one atom of
               halogen or sulfur
  215     ....Derived from carboxylic acid containing at least one atom of
               nitrogen
  216     ....Derived from aliphatic acid
  217     ...Material contains organic nitrogen compound
  218.1   ....Organic compound contains N=N or N-N group
  219     .....Organic N-N or N=N containing compound also contains at
                least one S or O chemically bound therein
  219.1   .....Organic N=N or N-N group containing compound contains
                carbocyclic group or element other than C,H, or N
  219.2   .....N=N or N-N group-containing compound is a catalyst
                admixed with at least one other catalyst, co-catalyst, or
                accelerator, e.g., redox catalyst, etc.
  219.3   .....Contains specified ingredient other than the N=N or
                N-N group containing compound, or water, or defined
                hydrocarbon or defined halogenated hydrocarbon
  219.4   ......Ingredient contains halogenated hydrocarbon
  219.5   ......Ingredient contains water, e.g., an emulsion,
                 dispersion, etc.
  219.6   .....Azobisisobutyronitrile (AIBN)
  220     ....Organic nitrogen compound contains at least one S or O atom
               chemically bound therein
  221     ...Material contains inorganic heavy metal compound
  222     ...Material contains organic sulfur compound
  223     ....Organic sulfur compound contains -S-S- or -O-O-group
  224     ....Mercaptan
  225     ....Organic compound contains hexavalent S atom, e.g.,
               organosulfate, sulfonate, etc.
  226     ...Material contains aluminum compound other than aluminum
              trihalide or nonmetallic organic complex of aluminum
              trihalidee
  227     ...Material contains peroxy group compound (-O-O-)
  228     ....Two or more peroxide compounds
  229     ....Inorganic peroxide, e.g., persulfate, hydrogen peroxide,
               etc.
  229.5   .....Nitrogen- or halogen-containing inorganic -0-0-
                compound free of sulfur, or wherein an -0-0- compound is in
                admixture with a compound devoid of sulfur and containing a
                N, halogen or P atom
  230     ....Hydroperoxide
  230.5   ....Peroxy carbonate
  231     ....Peroxide contains halogen atom chemically combined therein
  232     ....Peroxide contains an aryl group
  232.1   .....Benzoyl peroxide
  232.3   ....Two or more peroxy groups in same compound
  232.5   ....Cycloaliphatic or ethylenically unsaturated
               peroxy-containing compound
  233     ...Material contains elemental phosphorus or inorganic
              phosphorus compound
  234     ...Material contains sulfur or inorganic sulfur compound
  235     ...Material contains free oxygen, air, or ozone
  236     ...Material contains nitrogen compound
  237     ...Material contains metal halide, boron halide or organic
              complexes thereof, hydrogen halide, elemental halogen, or
              compound containing only halogen atoms
  238     ....At least one monomer is nonhydrocarbon material
  238.1   ..From protein or biologically active polypeptide
             containing monomer
  238.2   ..From carbohydrate, tannin, or derivative containing
             monomer
  238.21  ...Cellulose or derivative containing monomer
  238.22  ...Starch or derivative containing monomer, e.g.,
              starch-acrylamide, etc.
  238.23  ...Mono- or di-saccharide containing monomer, e.g., allyl
              sucrose, etc.
  238.3   ..From natural resin or derivative containing monomer
  239     ..From boron containing monomer
  240     ..From metal containing monomer
  241     ...Transition metal containing
  242     ..From fluorine containing monomer
  243     ...Fluorine-containing monomer contains a sulfur atom
  244     ...Fluorine-containing monomer is a ketone or aldehyde
  245     ...Fluorine containing monomer is a mono-carboxylic acid ester
  246     ....Alcohol derived portion of ester contains ether group
  247     ...Fluorine containing monomer is an ether
  248     ...Fluorine containing monomer contains nitrogen atom
  249     ...Fluorine containing monomer contains at least one diverse
              halogen atom
  250     ...Fluorine containing monomer contains F, C and H only or F and
              C only
  251     ....Aromatic
  252     ....Fluorine compound contains two or more ethylenic groups
  253     ....Five or more fluorine atoms
  254     .....Contains only carbon and fluorine atoms
  255     ....Two or more fluorine atoms, e.g., vinylidene fluoride, etc.
  256     ..From monomer containing sulfur atom as part of a heterocyclic
             ring
  257     ...Sulfur-containing ring contains additional hetero atom, i.e.,
              N, O, Se, Tee
  258     ..From monomer containing nitrogen atom as part of a
             heterocyclic ring
  259     ...Nitrogen atom is part of a bridged or fused ring system
  260     ...5- or 6-membered nitrogen ring compound having at least one
              oxygen in the ring
  261     ...Three or more nitrogen atoms in a single ring
  262     ...Imide monomer
  263     ...Nitrogen of ring is bonded directly or indirectly to
              extracyclic ethylenic moiety
  264     ....Lactam monomer
  265     ...6-membered ring contains a single nitrogen atom
  266     ..From monomer containing oxygen as part of a heterocyclic ring
  267     ...Polymer contains coumarone and indene
  268     ...From cyclic ether which is bridged or fused to a ring system
  269     ...Hetero-oxygen ring compound contains a carbonate group, i.e.,
              -O-C(=O)-O as ring atoms
  270     ...5-membered heterocyclic ring compound contains at least one
              oxygen atom
  271     ....Acid anhydride
  272     .....Interpolymerized with hydrocarbon monomer
  273     ...3-membered heterocyclic ring contains at least one oxygen
              atom
  274     ..From monomer containing a phosphorus atom
  275     ...Phosphorus is part of a ring
  276     ...Phosphorus is bonded to a nitrogen atom
  277     ...Phosphorus atom is pentavalent
  278     ....Pentavalent phosphorus is bonded to at least one atom of
               carbon
  279     ..From monomer containing a silicon atom
  280     ..From fused or bridged ring containing monomer
  281     ...Bridged monomer
  282     ....Contains an exterior ethylenic substituent bonded to a
               single carbon atom of the bridged ring system
  283     ....Compound containing dicyclopentadiene moiety
  284     ...Contains an exterior ethylenic substituent bonded directly or
              indirectly to a single carbon atom of the fused ring system
  285     ..From monomer containing an acetylenic group
  286     ..From S-containing monomer
  287     ...From monomer containing three or more oxygen atoms bonded to
              a single sulfur atom, e.g., sulfonate, etc.
  288     ...From sulfur monomer containing nitrogen atom
  289     ...From sulfide-containing monomer
  290     ..Monomer from unsaturated petroleum hydrocarbon fraction; from
             unsaturated coal or bituminous material, extract, or
             derivative thereof; or from unsaturated fatty still residue
  291     ..From halogen containing monomer having at least three carbon
             atoms
  292.1   ...Halogen monomer is carboxylic acid ester
  292.2   ....Contains nitrogen
  292.3   ....Contains oxygen other than as part of a carboxylic acid
               ester group
  292.4   ....Contains two or more carboxylic acid ester groups
  292.5   ....Contains carbocyclic ring, e.g., aryl, etc.
  292.6   ....Interpolymerized with a monomer containing atom other
               than carbon, hydrogen, or halogen
  292.7   ....Interpolymerized
  292.8   ...Halogen monomer is nitrile
  292.9   ...Halogen monomer contains an ether groupp
  292.95  ...Halogen monomer contains a carboxylic acid, salt, or
              carboxylic acid amide
  293     ...Aromatic
  294     ...Plural halogen atom
  295     ...Plural ethylenic groups
  296     ..From bromine or iodine containing monomer, dichloroethylene,
             trichloroethylene or tetrachloroethylene
  297     ..From nitrile group containing monomer other than acrylonitrile
             or methacrylonitrile
  298     ...Contains non-nitrile nitrogen atom or contains an oxygen
              atom
  299     ...Aromatic
  300     ...Plural nitrile group-containing
  301     ..From monomer containing a >N-C(=O)-O- group, e.g., carbamic
             acid, etc.
  302     ..From monomer containing a >N-C(=O)-N< or N-C(=O)-N< group,
             e.g., urea, etc.
  303.1   ..From carboxylic acid amide-containing monomer
  304     ...Contains oxygen atom other than in amide form bonded to a
              carbon atom
  305     ...Cycloaliphatic or aromatic
  306     ...Plural amide group containing
  307     ...Non-amide nitrogen containing
  307.1   ...N- substituted unsaturated hydrocarbon group
  307.2   ...With monomer containing carboxylic acid amide group
  307.3   ...With monomer containing nitrogen other than
              (meth)-acrylonitrile
  307.4   ...With monomer containing oxygen
  307.5   ....Oxygen atom is part of ether or hydroxyl group
  307.6   ....Oxygen atom is part of carboxylic acid group
  307.7   ....Oxygen atom is part of ester group derived from
               unsaturated carboxylic acid
  307.8   ...With hydrocarbon monomer
  308     ..From cycloaliphatic monomer
  309     ...Contains atoms other than carbon and hydrogen
  310     ..From nitrogen containing monomer other than acrylonitrile or
             methacrylonitrile
  311     ...Nitrogen bonded to oxygen atom (including nitrogen containing
              salts)
  312     ...Contains oxygen atom bonded to a carbon atom
  313     ..From phenol, phenol ether, or inorganic phenolate monomer
  314     ..From monomer containing a carbonate group, i.e., -O-C(=O)-O-
  315     ..From aldehyde monomer
  316     ..From ketone or ketene monomer
  317.1   ..From carboxylic acid monomer
  318     ...Carboxylic acid contains ester group
  318.1   ...Carboxylic acid contains aryl group, or two or more
              ethylenic groups
  318.2   ...Carboxylic acid contains two or more carboxyl groups
  318.25  ....With hydrocarbon, vinyl chloride or vinylidene chloride
               monomer
  318.3   ...Carboxylic acid other than acrylic or methacrylic acid
  318.4   ...With ester monomer
  318.41  ....Monomer contains chalcogen other than in C(=O)-O-
               chalcogen in any monomer)
  318.42  .....Hydroxyl group
  318.43  ....Monomer contains two or more ester groups
  318.44  ....Two or more ester monomerss
  318.45  ....With hydrocarbon monomer
  318.5   ...With chalcogen containing monomer, e.g., additional
              carboxyl monomer, etc.
  318.6   ...With hydrocarbon monomer
  319     ..From carboxylic acid ester monomer
  320     ...Ether or hydroxy containing
  321     ...Monomer containing at least two carboxylic acid ester groups
  322     ....Derived from an ethylenically unsaturated alcohol
  323     .....Derived from an ethylenically unsaturated acid containing
                plural carboxylic acid groups
  323.1   ....Diester derived from an ethylenically unsaturated
               monocarboxylic acid and polyol
  323.2   .....With additional monomer
  324     ....Interpolymerized with hydrocarbon monomer
  325     ....Interpolymerized with monomer of diverse carboxylic ester
  326     ...Aromatic
  327     ...Derived from an ethylenically unsaturated carboxylic acid and
              an ethylenically unsaturated alcohol
  328     ...Derived from an ethylenically unsaturated carboxylic acid
  328.5   ....With additional monomer
  329     .....Interpolymerized with hydrocarbon monomer
  329.1   ......Hydrocarbon monomer containing at least two ethylenic
                 groups, e.g., butadiene, etc.
  329.2   ......Aromatic, e.g., styrene, etc.
  329.3   .....Additional monomer is acrylonitrile or
                methacrylonitrile
  329.4   .....Additional monomer is a halogen-containing monomer
  329.5   .....Additional monomer is an ester derived from saturated
                carboxylic acid
  329.6   .....Additional monomer contains an ether group
  329.7   ....Polymer derived from methyl acrylate or methyl
               methacrylate
  330     ...Interpolymer of an ester derived from ethylenically
              unsaturated alcohol, e.g., interpolymer of vinyl acetate,
              etc.
  331     ....Interpolymerized with hydrocarbon monomer
  332     ..From monomer containing an ether group
  333     ...Plural ether groups
  334     ...Aromatic or plural ethylenic groups
  335     ..From hydrocarbon monomer containing at least two ethylenic
             groups, e.g., butadiene, etc.
  336     ...Ethylenic groups are non-conjugated, e.g., divinylbenzene,
              etc.
  337     ...Interpolymerized with at least one diverse hydrocarbon
              monomer containing at least two ethylenic groups
  338     ...Interpolymerized with non-hydrocarbon monomer
  339     ...Interpolymerized with aliphatic hydrocarbon
  340     ...Interpolymerized with aromatic hydrocarbon
  340.1   ...Polymerized in the presence of a water medium
  340.2   ...From hydrocarbon having only five carbon atoms
  340.3   ...From hydrocarbon having at least six carbon atoms
  340.4   ...Butadiene homopolymer contains at least 75%
              cis-1,4-configuration
  341     ..From acrylonitrile or methacrylonitrile
  342     ...Interpolymerized
  343     ..From vinylidene chloride
  344     ..From vinyl chloride
  344.1   ...Bulk or mass polymerization of vinyl chloride onlyy
  344.2   ...Polymerization of vinyl chloride only in an aqueous
              medium
  344.3   ...Polyvinyl chloride characterized by physical shape,
              e.g., fiber, sheet, etc.
  345     ...Interpolymerized
  346     ..From aromatic hydrocarbon
  347     ...Interpolymerized
  347.1   ...Monomer other than styrene
  347.2   ...Crystalline polystyrene
  348     ..From hydrocarbon
  348.1   ...Stretched product
  348.2   ...At least six carbon atoms
  348.3   ....Ten or more carbon atoms
  348.4   ....Six carbon atoms only
  348.5   .....N-hexene
  348.6   ...At least four carbon atoms
  348.7   ....Isobutylene
  348.8   ...With nonhydrocarbon monomer
  351     ...From propylene only
  352     ...From ethylene only
  352.2   ....Low density
  *       ******************************
  *       CROSS-REFERENCE ART COLLECTIONS
  *       ******************************
  901     MONOMER POLYMERIZED IN VAPOR STATE IN PRESENCE OF TRANSITION
           METAL CONTAINING CATALYST
  902     MONOMER POLYMERIZED IN BULK IN PRESENCE OF TRANSITION METAL
           CONTAINING CATALYST
  903     MONOMER POLYMERIZED IN PRESENCE OF TRANSITION METAL CONTAINING
           CATALYST AND HYDROCARBON ADDITIVE AFFECTING POLYMER PROPERTIES
           OF CATALYST ACTIVITY
  904     MONOMER POLYMERIZED IN PRESENCE OF TRANSITION METAL CONTAINING
           CATALYST AT LEAST PART OF WHICH IS SUPPORTED ON A POLYMER
  905     POLYMERIZATION IN PRESENCE OF TRANSITION METAL CONTAINING
           CATALYST IN PRESENCE OF HYDROGEN
  906     COMMINUTION OF TRANSITION METAL CONTAINING CATALYST
  907     SPECIFIED MEANS OF REACTING COMPONENTS OF TRANSITION METAL
           CATALYST
  908     CONTAINING CATALYST OF SPECIFIED PARTICLE SIZE
  909     POLYMERIZATION CHARACTERIZED BY PARTICLE SIZE OF PRODUCT
  910     SUSPENDING AGENTS
  911     EMULSIFYING AGENTS
  912     REACTION MEDIUM PURIFICATION
  913     VAPOR PHASE POLYMERIZATION IN ABSENCE OF TRANSITION METAL
           CONTAINING CATALYST
  914     POLYMER DEGRADATION
  915     REDOX CATALYST
  916     INTERPOLYMER FROM AT LEAST THREE ETHYLENICALLY UNSATURATED
           MONOOLEFINIC HYDROCARBON MONOMERS
  917     MANIPULATIVE PROCESSES INVOLVING A SULFUR-CONTAINING TREATING
           AGENT
  918     POLYMERIZATION REACTORS FOR ADDITION POLYMER PREPARATION
  919     CATALYST INJECTION TECHNIQUE IN ADDITION POLYMERIZATION
           PROCESSES
  920     APPARATUS FOR USE IN ADDITION POLYMERIZATION PROCESSES
  921     TIME CYCLE USED IN ADDITION POLYMERIZATION PROCESS CONTROL
  922     POLYMERIZATION PROCESS OF ETHYLENIC MONOMERS USING MANIPULATIVE
           TECHNIQUEE
  923     ETHYLENIC MONOMERS CONTAINING AT LEAST ONE SALT GROUP
  *       ******************************
  *       *Note. The following.........*
  *       *subclasses pertain only to..*
  *       *subclasses 317.1 and 318.1..*
  *       *to 318.5. ..................*
  *       ******************************
  930     WATER SWELLABLE OR HYDROPHILIC
  931     PRESSURE SENSITIVE ADHESIVE
  932     THICKENER OR DISPERSANT FOR AQUEOUS SYSTEM
  933     DETERGENT PROPERTY OR LUBRICANT ADDITIVE
  934     ELECTRODEPOSIT, E.G., ELECTROPHORETIC, XEROGRAPHIC, ETC.
  935     HOT MELT ADHESIVE
  936     PHYSIOLOGICAL USE, E.G., PHARMACEUTICAL, VETERINARY, DENTAL,
           ETC.
  937     OPTICAL CLARITY
  938     RUBBERY PROPERTY
  939     MOSITURE PROOF OR HYDROPHOBIC
  940     HIGH SOFTENING TEMPERATURE, E.G., EXPOSURE TO BOILING WATER,
           BOILABLE, ETC.