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: 383
 Class Title: FLEXIBLE BAGS

Subclass  Subclass
Number    Title

  1       BIODEGRADABLE FEATURE
  2       SELECTIVELY ADJUSTABLE VOLUME
  3       INFLATABLE
  4       CONVERTIBLE
  5       TAMPER INDICATING
  6       LIFTING OR SUSPENDING ELEMENT (E.G., HANDLE)
  7       .Unitary with bag (e.g., element formed by hand hole)
  8       ..Loop extending between opposite walls
  9       ..Bag material includes aperture for rod-like support
  10      ..Bag material includes hand-receiving aperture
  11      .Magnetic or adhesive-type element (includes Velcro)
  12      .Attached to bag frame
  13      .Detachable
  14      .With provision for positioning element in nonuse location
  15      .Plural interengaging elements
  16      .Plural elements located at diverse bag regions (i.e., bag
            bottom, bag middle and/or bag top)
  17      .Including reinforcement or stress distribution means attached
            to or adjacent element
  18      ..Extending across bag bottom
  19      ..Extending axially through bag interior to bag bottom
  20      ..Additional layer of material at element attachment location
  21      .Attached to distinct end wall
  22      .Hanging element
  23      ..Hook-type
  24      ..Closed loop
  25      .Single element
  26      ..Bag includes opening through bag material to receive element
  27      ...Opening extending through fold of folded bag portion
  28      ..Secured to bag interior
  29      ..Straddles bag mouth
  30      ..Secured to folded bag closure
  31      ...Closure flap
  32      WITH STACKING FEATURE
  33      WITH MEANS TO MAINTAIN THE BAG MOUTH IN AN OPEN CONFIGURATION
  34      .Hinged mouth stiffeners
  34.1    ..Stiffeners include four or more hinged segments
  35      WITH MEANS TO FACILITATE MANUAL SEPARATION OF FLATTENED BAG
           WALLS
  36      WITH INTEGRAL FUNNEL
  37      PLURAL
  200     BAG HAVING MEANS TO FACILITATE OPENING IT BY SEVERING BAG
           MATERIAL OR BAG PART (E.G., TEARING, CUTTING, PIERCING, ETC.)
  201     .Tearing facilitated by specified fiber or molecular
            orientation
  202     .Combined with, or modified for opening by, a sharp-edged
            cutting implement or a piercing implement
  203     .Including means for reclosing the bag
  204     ..Including a bag portion which is completely separated from the
             bag during tearing (e.g., tear strip)
  205     .Including a separate tearing element which is gripped and
            pulled to open the bagg
  206     ..Cord, string, wire, or thread
  207     .Line of weakness delineates substantially the entire tearing
            path
  208     ..Line of perforations having means for preventing leakage
             before opening
  209     ..Bag portion completely separated from the bag during tearing
  210     BAG CLOSURE SECURED BY A RELEASABLE OR FRANGIBLE BOND (E.G.,
           PEEL SEAL)
  211     .Adhesive bond
  38      COMPARTMENTED
  39      .Compartment-forming member secured to backing
  40      .Including auxiliary compartment
  41      WITH PLURAL ACCESS OPENINGS
  42      WITH CLOSURE
  43      .Self-closing type
  44      ..Responsive to content (e.g., valve)
  45      ...With vent
  46      ...With closure reinforcing or stiffening means
  47      ...With means to facilitate opening closure
  48      ...With supplemental closing feature
  49      ....Resilient
  50      ....Reversely folded portion of closure element
  51      ....Slit or slot
  52      ....Adhesive
  53      ...In distinct end wall
  54      ....Including separate closure element
  55      ...Folded bag corner
  56      ....Including separate closure element
  57      ...Closure includes inwardly folded bag wall portions
  58      ...Overlying access opening in bag material
  59      .Including auxiliary means for forming leakproof closure seal
  60      ..Annular gasket
  61      .Multiple independent closures for single access opening
  62      .With provision for positioning closure element in nonuse
            location
  63      .Rib and groove
  64      ..With sliding element
  65      ..Including means to facilitate disengagement
  66      .For access opening in sidewall
  67      .For access opening in bag bottom
  68      .Elongated clamping elements
  69      ..Sliding
  70      .Twisted bag mouth
  71      .Gathered bag mouth
  72      ..Including drawstring-type securing element
  73      ...With mouth opening aid
  74      ...With means to maintain the securing element in closed
              configuration
  75      ...In bag hem
  76      ...Through bag openings
  77      ..Securing element consisting of unitary bag portion
  78      .Including separate closure element for straddling bag mouth
            (i.e., overlaps exterior portions of opposed bag walls)
  79      ..Including securing element designed to extend through aligned
             openings in closure element (e.g., stitching)
  80      ..Cap-type
  81      ..Reusable
  82      ...Bag walls designed to be rolled together or folded on commonn
              fold line
  83      ..Bag walls designed to be rolled together or folded on common
             fold line
  84      .Including closure flap which overlaps sidewall exterior when
            closed
  85      ..Bag walls designed to be rolled together or folded on common
             fold line
  86      ..Reusable
  86.1    ...Including fastening element removably extending through
              aperture in bag material
  86.2    ....Aperture extends through closure flap
  87      ...Flap side edges permanently secured to bag (e.g., sandwich
              bag type)
  88      .Bag walls designed to be rolled together or folded on common
            fold line
  89      ..With separate securing element for roll or fold
  90      ...Element extends substantially 180 degrees or more around roll
              or fold
  91      ....Element extends around side edge
  92      .Including securing element designed to extend through aligned
            openings in bag material (e.g., stitching)
  93      .Closure within bag
  94      ..Heat seal
  95      ..Reusable
  96      ...Stopper or plug
  97      ...Zipper
  98      .Overlapped flaps
  99      ..Reusable
  100     WITH VENTING OR VENTILATION MEANS
  101     .Fluid circulates between bag plies
  102     .Pervious material
  103     .Opening in bag material
  104     FREE-STANDING
  105     WALL DETAILS
  106     .Transparent portion or window
  107     .Specified seam structure
  108     ..Waterproof
  109     .Multi-layer or ply
  110     ..Insulated
  111     ..Removable ply
  112     ..Stretchable layer or ply
  113     ..Barrier layer or ply (e.g., waterproof)
  114     ..Including specified end structure
  115     ...Overlapping extension formed by cuts in bag wall
  116     ..Coating or lamination
  117     .Woven or mesh-type material
  118     .Stretchable
  119     .Reinforced
  120     .Pleated or gusseted
  121     END STRUCTURE (E.G. BOTTOM)
  121.1   .Rigid bottom
  122     .Seamless
  123     .Formed by folding bag walls on common fold line and joining
            together
  124     ..Foldable to form distinct end wall
  125     .Overlapping extensions of opposed walls
  126     ..Extension formed by cuts in bag wall
  127     MISCELLANEOUSS
  *       ******************************
  *       CROSS-REFERENCE ART COLLECTIONS
  *       ******************************
  901     HOT WATER OR ICE BAG
  902     HAVING NONBAG USE
  903     STRESS RELIEF
  904     FILLING TUBE
  905     DEAD FOLD (DUCTILE) CLOSURE ELEMENT
  906     DISPENSING FEATURE
  907     PECULIAR, PARTICULAR SHAPE
  908     MATERIAL HAVING SPECIFIED GRAIN DIRECTION OR MOLECULAR
           ORIENTATION