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: 250
 Class Title: RADIANT ENERGY

Subclass  Subclass
Number    Title

  250     RADIO AND MICROWAVE ABSORPTION WAVEMETERS
  251     ELECTRICALLY NEUTRAL MOLECULAR OR ATOMIC BEAM DEVICES AND
           METHODS
  252.1   CALIBRATION OR STANDARDIZATION METHODS
  253     GEOLOGICAL TESTING OR IRRADIATION
  254     .With drill or drilling
  255     .With sampling
  256     .Well testing apparatus and methods
  257     ..With casing collar detection
  258     ..By interface of fluids
  259     ..With placement of tracer in or about well
  260     ...Tracer being or including radioactive material
  261     ..With detector or detector circuit control
  262     ..With particular detector signal circuit
  263     ...With detector signal modulation or carrier wave
  264     ...Having plural detectors
  265     ..Plural detectors
  266     ...With spacing or direction of detectors
  267     ..With radiation control to detector
  268     ..With well engaging means
  269     ..With source and detector
  270     ...Having neutron source and gamma detector
  271     CODED RECORD AND READERS; INVISIBLE RADIANT ENERGY TYPE
  281     IONIC SEPARATION OR ANALYSIS
  282     .Methods
  283     ..With collection of ions
  284     ...For material recovery
  285     .With plural, simultaneous ion generators
  286     .Ion beam pulsing means with detector synchronizing means
  287     ..With time-of-flight indicator
  288     .With sample supply means
  289     .With evacuation or sealing means
  290     .Cyclically varying ion selecting field means
  291     ..Circular ion path
  292     ..Laterally resonant ion path
  293     ..Alternating field ion selecting means
  294     .Static field-type ion path-bending selecting means
  295     ..With variable beam shifting field means
  296     ..Plural diverse-type static path-bending fields
  297     ...For causing complex ion path
  298     ..Magnetic field path-bending means
  299     ...With detector
  300     ....With detector control or regulating
  301     METHODS OF DETERMINING OIL PRESENCE, CONTAMINATION OR
           CONCENTRATION
  302     RADIATION TRACER METHODS
  303     .Radioactive tracer methods
  304     METHODS INCLUDING SEPARATION OR NONRADIANT TREATMENT OF TEST
           MATERIALS
  305     ELECTRON ENERGY ANALYSIS
  306     INSPECTION OF SOLIDS OR LIQUIDS BY CHARGED PARTICLES
  307     .Methodss
  308     .Including a radioactive source
  309     .Positive ion probe or microscope type
  310     .Electron probe type
  311     .Electron microscope type
  440.11  .Analyte supports
  441.11  ..With air lock or evacuation means
  442.11  ..With object moving or positioning means
  443.1   ..With heat transfer or temperature-indication means
  315.3   SOURCE WITH CHARGED PLATE-TYPE DETECTOR
  316.1   WITH INFRARED OR THERMAL PATTERN RECORDING
  317.1   .Thermal copying of documents
  318     ..With image transfer device
  319     ..With conveying means
  324     CORONA IRRADIATION
  325     .Charging of moving object
  326     .Charging of objects
  580     SOURCE WITH RECORDING DETECTOR
  581     .Using a stimulable phosphor
  582     ..With image recording
  583     ...For specialized application
  584     ..With image read-out
  585     ...Including stimulation
  586     ...Including emission detection
  587     ....With adjustment of conditions
  588     ..With erasure
  589     ..With conveyance
  590     ...With a recirculation path
  591     .Including a light beam read-out
  328     AUTOMATIC/SERIAL DETECTION OF SIMILAR SOURCES
  329     RECORD PROJECTORS
  330     INFRARED-TO-VISIBLE IMAGING
  331     .Including liquid crystal detector
  332     .Including detector array
  333     .Including image tube-type detector
  334     .Including means for scanning field of view
  335     CLOUD OR BUBBLE CHAMBERS
  336.1   INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING
  336.2   .Superconducting type
  337     .With heating of luminophors
  338.1   .Infrared responsive
  338.2   ..Ferroelectric, ferromagnetic, photomagnetic types
  338.3   ..Pyroelectric type
  338.4   ..Semiconducting type
  338.5   ..With means to analyze uncontained fluent material
  339     ..With selection of plural discrete wavelengths or bands
  340     ..Methods
  341     ...With irradiation of object or material
  342     ...Locating infrared emissive objects
  343     ..With means to transmission-test contained fluent material
  344     ...Plural series signalling means
  345     ...Plural beam/detector pairs
  346     ....Plural temperature sensitive signalling means
  347     ..With movable beam deflector or focussing means
  348     ...Controlled by signalling means
  349     ..Plural signalling means
  350     ...With periodic beam varying means
  351     ..With periodic beam varying means
  352     ..With temperature modifying meanss
  353     ..With beam deflector or focussing means
  354.1   .Signalling means controls incident radiation
  356.1   .Flow metering
  356.2   ..Using radioactive tracer
  357.1   .Fluent material level signalling
  358.1   .With means to inspect passive solid objects
  359.1   ..Rectilinearly moving object
  360.1   ..With relative movement means
  361 R   .With or including a luminophor
  362     ..Methods
  363.01  ..With radiant energy source
  363.02  ...Body scanner or camera
  363.03  ....With position source
  363.04  ....Emission tomography
  363.05  .....With detector support
  363.06  ....Using coded aperture
  363.07  ....With distortion correction
  363.08  ....With detector support
  363.09  ....With calibration
  363.1   ....With a collimator
  364     ...With fluent source handling or collecting means
  365     ...Ultraviolet light source
  366     ..Plural electric signalling means
  367     ..Plural or composite luminophor
  368     ..With optics
  369     ..With output system
  361 C   ..Chemiluminescent detection
  370.01  .Semiconductor system
  370.02  ..Alpha particle detection system
  370.03  ..Fission fragment/fissionable isotope detection system
  370.04  ..Self-powered system
  370.05  ..Neutron detection system
  370.06  ..Discrimination-type system
  370.07  ..Dose or dose rate measurement
  370.08  ..Imaging system
  370.09  ...X-ray or gamma-ray system
  370.1   ..Position sensitive detection system
  370.11  ..Scintillation system
  370.12  ..Of material other than Gallium Arsenide or elemental
             Silicon
  370.13  ...Containing cadmium telluride
  370.14  ..Particular detection structure (e.g., MOS, PIN)
  370.15  ..Temperature control or compensation system
  371     ..Methods
  372     .Ultraviolet light responsive means
  373     ..With means to transmission-test contained fluent material
  374     .Including a radiant energy responsive gas discharge device
  375     ..Methods
  376     ..With electroscopic indicators
  377     ...With charge generator
  378     ...With charge storage means
  379     ..With means to supply the gas
  380     ...Radioactive gas, or with gas-borne radioactive material
  381     ...With radioactive source
  382     ..With means to ionize the gas
  383     ...Emissive fluent type, or with transmissive fluent material
  384     ...Radioactive
  385.1   ..Plural chambers or three or more electrodess
  385.2   ...Spark chambers
  386     ..With a periodic electrode bias varying means
  387     ..With periodic electrode bias supply
  388     ..With indicator
  389     .Including ionization means
  390.01  .Neutron responsive means
  390.02  ..Radiographic analysis
  390.03  ..With dose measurement
  390.04  ..Composition analysis
  390.05  ...For moisture content
  390.06  ..Density/thickness/consistency analysis
  390.07  ..Spectrum analysis
  390.08  ...Using time-of-flight spectrometers
  390.09  ...Using diffractometers
  390.1   ..Including beam control
  390.11  ..Including a scintillator
  390.12  ..Position-sensitive
  391     ..Methods
  392     ..With indicating or recording means
  393     .With radiant energy source
  394     .Plural signalling means
  395     .Methods
  200     PHOTOCELLS; CIRCUITS AND APPARATUS
  201.1   .Photocell controls its own optical systems
  201.2   ..Automatic focus control
  201.3   ...Of a microscope
  201.4   ...Active autofocus
  201.5   ....With optical storage medium; e.g., optical disc, etc.
  201.6   ...Based on triangulation
  201.7   ...Based on contrast
  201.8   ...Based on image shift
  201.9   ..Light beam wavefront phase adaptation
  203.1   ..Following a target (e.g., a star or instrument pointer or
             other object) other than a pattern
  203.2   ...Target illuminated by artificial light source
  203.3   ...Self-luminous target
  203.4   ....Sun
  203.5   ....Cathode-ray tube scanning
  203.6   ....Airborne target, or spaceborne target other than the
               sun (e.g., star or missile)
  203.7   ....With moving reticle in optical path
  202     ..Following a pattern (e.g., line or edge)
  548     ..Controlling web, strand, strip, or sheet
  549     ..Cathode-ray tube
  204     ..Adjusting optical system to balance brightness in plural
             paths
  205     ..Controlling light source intensity
  550     .Interference pattern analysis (e.g., spatial filtering or
            holography)
  551     .Signal isolator
  552     .Solid state light source
  553     ..Array or matrix
  554     .Flame light source
  206     .Photocell controlled circuit
  206.1   ..Having means to generate positional information in at
             least one plane of a target moving relative to one or more
             photodetectors
  206.2   ...Detection of positional information in two or moree
              planes (e.g., azimuth and elevation; hour angle and
              declination)
  206.3   ....With moving reticle in optical path
  555     ..Including coded record
  556     ...Document verification or graph reader
  557     ...With means to position, direct, or detect record
  558     ..Steroplotters
  559     ..With circuit for evaluating a web, strand, strip, or sheet
  560     ...Width or length
  561     ...Presence or position
  562     ...Defects
  563     ....With scanning
  564     ..With circuit for evaluating a fluent material
  565     ...With comparison
  207     ..Electron multiplier
  208.1   ..Plural photosensitive image detecting element arrays
  208.2   ..Plural photosensitive nonimage detecting elements
  208.3   ...With electronic scanning
  208.4   ...Used to switch an electrical circuit or device on or
              off
  208.5   ...With photodetector output ratioing other than by bridge
              or push-pull circuits
  208.6   ...With specific relative positional geometry of
              photosensitive elements (e.g., an annular photosensitive
              element surrounding a coaxially mounted photosensitive
              element)
  210     ..Bridge and push-pull circuits
  214 R   ..Special photocell or electron tube circuits
  214 P   ...Photographic control
  214 D   ...Light dimmers
  214 A   ...Amplifier type
  214 LA  ....Light amplifier type
  214 LS  .....Switching type
  214 VT  .....Vacuum tube type
  214 PR  ...Photosensitive rheostat type
  214 SG  ...Self-generating type
  214.1   ...Special photocell
  214 AG  ...Automatic gain control
  214 AL  ...Ambient light responsive
  214 B   ...Ambient light desensitizing means
  214 C   ...Compensation
  214 DC  ...Digital circuitry
  214 L   ...Logarithmic/linear signal
  214 RC  ...Rate of change
  214 SF  ...Slave flash
  214 SW  ...Electronic switch
  215     .Combined with diverse-type device
  216     .Optical or pre-photocell system
  227.11  ..Light conductor
  227.12  ...Optical delay line
  227.13  ...Light pen
  227.14  ...Condition responsive light guide (e.g., light guide is
              physically affected by parameter sensed which results in
              light conveyed to the photocell)
  227.15  ....With detection of macroscopic break in fiber
  227.16  ....With detection of fiber microbend caused by parameter
               affecting fiber
  227.17  ....Causing polarization change in fiberr
  227.18  ....Causing light spectral frequency/wavelength change
  227.19  ....With coherent interferrometric light
  227.2   ...With imaging
  227.21  ...With light chopping or modulation
  227.22  ....Keyboard or other manual switch controlled
  227.23  ...With spectral frequency/wavelength discrimination
  227.24  ...With coupling enhancement means
  227.25  ....Fluid coupling
  227.26  ...With scanning
  227.27  ...With coherent interferrometric light
  227.28  ...With specific configuration of light conductor
              components with respect to each other
  227.29  ...With specific illumination or viewing orientation of
              light conductor relative to viewed object (e.g., light normal
              to, and detector at 45 degree angle to, viewed object)
  227.3   ...With variable orientation of light conductor relative to
              viewed object (e.g., goniometer)
  227.31  ...Side or edge illuminated light conductor or collector
  227.32  ...End illuminated light conductor with noncircular
              geometric cross section
  566     ..Including coded record
  568     ...Digital information
  569     ....Card type
  570     ....Tape, drum, or disc types
  571     ..Detection or web, strand, strip, or sheet
  572     ...Material defects
  573     ..Fluent material in optical path
  574     ...Scattered or reflected light
  575     ...Plural paths
  576     ...Sample holder or supply
  577     ...Volume or level
  221     ..Controlled by article, person, or animal
  222.1   ...Inanimate article
  222.2   ....Particle detection
  223 R   ....Conveyor or chute
  223 B   .....Bottles
  224     ....Article and light ray relatively moved during sensing
  225     ..Polarizing
  226     ..Color (e.g., filter or spectroscope)
  228     ..Integrating sphere
  229     ..Light valve (e.g., iris diaphragm)
  231.1   ...Actuated by dynamic external physical quantity
  231.11  ....Actuated by gauge element deflection
  231.12  ....Gyroscopes
  231.13  ....Shaft angle transducers
  231.14  .....Incremental shaft readers; i.e., with means to
                generate increments of angular shaft rotation
  231.15  ......With plural gear driven discs
  231.16  ......Using phase difference of output signals from plural
                 photodetectors
  231.17  ......With means to indicate a complete shaft rotation
  231.18  ......Position indicating shaft encoders with means to
                 generate a unique signal for each specific angular shaft
                 position
  231.19  ....Pressure-responsive light valves
  230     ...Reflection type(e.g., mirror galvanometer)
  232     ...Light chopper type
  233     ....Rotaryy
  578.1   ..Plural light sources or optical paths
  234     ..Means for moving optical system
  235     ...Repetitious path
  236     ....Rotary motion
  237 R   ..Hoods, grating, baffles, diaphragms, masks
  237 G   ...Gratings (moire fringes)
  238     .Temperature control of photocell
  239     .Housings (in addition to cell casing)
  396 R   WITH CHARGED PARTICLE BEAM DEFLECTION OR FOCUSSING
  397     .With detector
  398     .With target means
  399     ..Secondary emissive type
  400     ..With means to convey or guide the target
  396 ML  .Magnetic lens
  423 R   ION GENERATION
  424     .Methods
  425     .With sample vaporizing means
  426     .Arc type
  427     .Electron bombardment type
  423 P   .Photoionization type
  423 F   .Field ionization type
  428     FLUENT MATERIAL CONTAINMENT, SUPPORT OR TRANSFER MEANS
  429     .With temperature control
  430     .With valve or pump actuator
  431     .With cleaning means
  432 R   .With irradiating source or radiating fluent material
  433     ..Including a movable surface transfer means
  434     ..Including a gravity-type transfer means
  435     ..Including a flowthrough transfer means
  436     ...Flow-enclosed radiation source
  437     ...Tortuous path type
  438     ...With a flow-modifying surface
  432 PD  ..Parent-daughter isotope separators
  453.11  SUPPORTED FOR NONSIGNALLING OBJECTS OF IRRADIATION (E.G.,
           WITH CONVEYOR MEANS)
  454.11  .With source support
  455.11  ..Source and object encasement (e.g., sterilizers)
  458.1   LUMINOPHOR IRRADIATION
  459.1   .Methods
  461.1   .With ultraviolet source
  461.2   ..Biological cell identification
  462.1   .Self-luminous article
  463.1   ..Dials, pointers, gauges, and bands
  464.1   ..Pendants
  465.1   ..Manual operators or luminous attachments therefor
  466.1   ..Covers, keys, or luminous attachments therefor
  467.1   ..Reticles, gun sights or with optical element
  472.1   INVISIBLE RADIATION RESPONSIVE NONELECTRIC SIGNALLING
  473.1   .Methods
  474.1   .Optical change type
  475.2   .Photographic type
  482.1   ..With radiation filter, modifier, or shield (e.g.,
             dosimeter badges)
  483.1   .Luminescent device
  484.2   ..Requiring an additional energy source to cause
             luminescence
  484.3   ...With thermally-stimulated phosphor
  484.4   ...With optically-stimulated phosphorr
  484.5   ....Dosimeter
  485.1   ..With light excluding casing having an aperture
  486.1   ..With plural luminescent material or plural luminescent
             containing layers or areas
  487.1   ..With optical member of material to directly modify
             luminous energy
  488.1   ...Plural planar layer type
  489     ION COLLECTORS
  491.1   MEANS TO ALIGN OR POSITION AN OBJECT RELATIVE TO A SOURCE
           OR DETECTOR
  492.1   IRRADIATION OF OBJECTS OR MATERIAL
  492.2   .Irradiation of semiconductor devices
  492.21  ..Ion bombardment
  492.22  ..Pattern control
  492.23  ..Variable beam
  492.24  ..Photocathode projection
  492.3   .Ion or electron beam irradiation
  493.1   RADIANT ENERGY GENERATION AND SOURCES
  494.1   .Plural radiation sources
  495.1   ..Including an infrared source
  496.1   .With container for radioactive source and radiation
            directing or selectable shielding
  497.1   ..With means to move source between shielded and unshielded
             position
  498.1   ..With pivoted or rotatable radiation shield
  503.1   .With radiation modifying member
  504 R   ..Ultraviolet or infrared source
  504 H   ...Hand-held
  505.1   RADIATION CONTROLLING MEANS
  506.1   .Shielded receptacles for radioactive sources
  507.1   ..Having plural storage compartments or plural nested
             receptacles
  515.1   .Shields
  516.1   ..Garments
  517.1   ..Construction elements or building parts
  518.1   ..With neutron absorption material
  519.1   ..Flexible
  522.1   SOURCE SUPPORTS
  526     MISCELLANEOUS
  *       ******************************
  *       CROSS-REFERENCE ART COLLECTIONS
  *       ******************************
  900     OPTICAL LIQUID LEVEL SENSORS
  901     .With gap between light guide elements (includes open light path
            preset)
  902     ..With closed light path preset
  903     ...With prism contacting liquid
  904     .With single light guide element to guide light in a continuous
            path
  905     ..With longitudinal irregularity
  906     ...With large scale longitudinal bend
  907     ...With portions of light guide coating or cladding removed
  908     ...With waveguide twisted about its longitudinal axis
  909     METHODS AND APPARATUS ANCILLARY TO STIMULABLE PHOSPHOR SYSTEMS