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: 34
 Class Title: DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

Subclass  Subclass
Number    Title

  1 R     MATERIAL SUBJECTED TO ELECTROMAGNETIC ENERGY
  1 A     .Electric current applied directly through material
  1 B     .Induction heater
  1 C     .Magnetic field
  1 D     .Controls particle movement in fluidized bed
  1 E     .Electrostatic field
  1 F     .With suction means
  1 G     .With vibration means
  1 H     .Having needle-like electrodes
  1 J     .With heating or cooling means
  1 K     .Radio or high-frequency energy
  1 L     .With additional heating means
  1 M     .With pressure reducing means
  1 N     .Plural units or chambers
  1 P     .Microwave energy
  1 Q     .Clothes dryer
  1 DD    ..With rotating drum
  1 S     .With vibrating means
  1 T     .With pressure reducing means
  1 U     .Plural units or chambers
  1 V     .With treating gas or vapor circulation
  1 W     .Infrared energy
  1 X     .With treating gas or vapor circulation
  1 Y     .Ultraviolet energy
  1 Z     .With inert gas
  1 AA    .Having shutter means
  1 BB    .With cooling
  1 CC    .Material treated by acoustic energy
  2 R     FEATHER TREATING
  2 A     .With agitator
  *       PROCESSES
  3       .Hair on head
  4       .With selected radiant energy
  5       .With freezing, congealing or thickening
  6       .Sheet or web contact preventing by spacer sheets, webs or
            strands
  7       .Retarding treating action by shielding
  8       .With centrifugal force
  9       .With contacting of material treated with liquids or solids
  9.5     ..Wood treated
  10      .With fluid current conveying or suspension of treated material
  11      .With treated material recirculation
  12      .With operation on treated material other than drying
  13      ..With cooling
  13.4    ...Wood treated
  13.8    ..Wood treated
  14      .With mechanical liquid removal
  15      .With vacuum and/or gas or vapor pressure varying or control
            and/or fluid sealing
  16      ..Sheets, webs or strands
  16.5    ..Wood treated
  17      .Diverse types of drying operationss
  18      ..Sheets, webs or strands
  19      .Combined
  20      .Cooling by gas or vapor contact
  21      .Hollow articles and/or forms
  22      .Gas or vapor contact with material treated
  23      ..Sheets, webs or strands
  24      ...With spacing, rolling or coiling
  25      ..Material speed, thickness or quantity control
  26      ..Temperature control or varying and treatment of gas or vapor
  27      ...Vapor removal from gas
  28      ...With treated material motion
  29      ...Gas or vapor flow directing or control
  30      ..Temperature control or varying
  31      ...With treated material motion
  32      ..Treatment of gas or vapor
  33      ..With treated material motion
  34      ..Gas or vapor flow directing or control
  35      ..Heat conserving
  36      ..Special gas or vapor
  37      ...Vapors
  38      ..Piling or arranging material treated
  39      .Radiant or conducted heating
  40      ..With evolved gas or vapor treatment
  41      ..Sheets, webs or strands
  42      .Miscellaneous
  *       APPARATUS
  43      .With automatic control
  44      ..Of plural operations
  45      ...Of operation sequence
  46      ...Of heater, contacting gas humidity and/or gas mixing
  47      ..Of gas mixing
  48      ..Of heater
  49      ...By web or strand tension or breaking
  50      ..Of contacting gas humidity
  51      ..Of gas or vapor pressure in treating enclosure
  52      ..Of rate of treated material motion
  53      ..Of time period
  54      ..Of flow of gas or vapor treating fluid
  55      ..Of starting and/or stopping
  56      ..Of treated material feeding and/or discharging
  57 R    .With fluid current conveying of treated material
  57 A    ..Vertical gas projection
  57 B    ..Lateral air blast
  57 C    ..Inclined grate
  57 D    ..Mechanical rotating element
  57 E    ..Rotary gas current
  58      .With apparatus using centrifugal force
  59      ..Rotary scattering member
  60      .For diverse operations on treated material
  61      ..With two or more nondrying means
  62      ..With treated material cooling means
  63      ...Internal rotary drum drier
  64      ...Gravity flow-type drier
  65      ....With integral cooling chamber or section
  66      ...Cooler chamber integral with or similar to drier
  67      ...Atmospheric
  68      ..Diverse heater types and/or gas or vapor contact types only
  69      ..Diverse types of liquid removers onlyy
  70      ...With expressing or wringing
  71      ...With means to remove liquid from treated material by contact
              with solids
  72      .With means to treat gas or vapor
  73      ..By vapor condensation
  74      ...With other gas or vapor treatment
  75      ...Direct contact with cooling substance
  76      ...With force circulation
  77      ....Recirculation of treating gas or vapor
  78      ...Recirculation of treating gas or vapor
  79      ..Separation of substances from treating or exhaust gases or
             vapors
  80      ...By absorbent
  81      ....In or forming walls, ceiling or floor
  82      ...By filter
  83      ..Jet devices
  84      ...Gas or vapor circulators or flow promotors
  85      .With apparatus cleaner and/or escaping material collector
  86      .With waste gas heat and/or power conservers
  87      .With means to interlock operable elements
  88      .With display, inspecting or illuminating means
  89      .With indicating or testing means
  89.1    .Blotting means combined with means for purpose other than
            drying
  89.2    ..With ruler
  90      .Combined
  91      .Convertible
  92      .Vacuum
  93      .Solar
  94      .Sheet or web contact preventing by spacer sheets, webs or
            strands
  95      .Means to remove liquid from treated material by contact with
            solids
  95.1    ..Having manipulative means
  95.2    ...Attachable to hand (e.g., finger)
  95.3    ...For rolling contact
  95.4    ...For rocking contact
  96      .For hair on head
  97      ..With gas or vapor flow for contact
  98      ...Plural distributors
  99      ...Head conforming distributor
  100     ....Recirculation of treating gas or vapor
  101     ...With hair supports
  102     .Treated material recirculating means
  103     .Forms
  104     .For hollow article
  105     ..With conveying or handling means
  106     ..With suspension means and bottom retainer
  107     .For slender rigid articles
  108     .Rotary drums or receptacles
  109     ..Compartmented or pocketed
  110     ..External
  111     ...With belt or felt drier
  112     ...With hopper feed or article securing means
  113     ...Plural
  114     ....Gas or vapor circulation for contact with treated material
  115     .....Through material or introduction through drum
  116     ....With belts or feltss
  117     .....With threading, stripping or guiding devices
  118     .....Tightener
  119     ....Heat exchange fluid supply and/or removal
  120     ....Threading, stripping, or guiding devices
  121     ....Mounting and/or driving means
  122     ...Gas or vapor circulation for contact with treated material
  123     ...With belts or felts
  124     ...Heat exchange fluid supply and/or removal
  125     ....Removal only
  126     ..With additional translating means
  127     ..Plural
  128     ...One within another (e.g., nested)
  129     ...With feed from one to another
  130     ..With gas or vapor flow for contact with treated material
  131     ...Recirculation of treating gas or vapor
  132     ...With heating means
  133 R   ....With drum or receptacle enclosing housing
  133 A   .....Combined washer-dryer
  133 B   .....With material conditioner dispenser
  133 C   .....With heat retaining means
  133 D   .....With material tumbling assisting means
  133 E   .....With stationary trays in rotatable drum
  133 F   .....With supporting, driving, sealing or bearing means for
                drum
  133 G   .....With specific drum structure
  133 H   .....With specific housing structure
  133 J   .....With gas or vapor circulating means
  133 K   .....With suction means
  133 L   .....With gas or vapor flow regulating means
  133 M   .....With conduit to deliver gas or vapor to drum
  133 N   .....With vertical gas or vapor flow
  133 P   .....With axial gas or vapor flow
  133 Q   .....With radial gas or vapor flow
  134     ....Heat exchange and/or gas or vapor conducting conduits in
               drum or receptacle
  135     ...Axial treated material feed type
  136     ....Concurrent gas or vapor flow only
  137     ....Counter-current gas or vapor flow only
  138     ...Gas or vapor conducting conduits in drum or receptacle
  139     ...With drum or receptacle enclosing housing
  140     ..Vapor exhaust
  141     ...Axial treated material feed type
  142     ..Axial treated material feed type
  143     .Stationary press type
  144     ..Plural press units
  145     ..Gas or vapor circulation for contact with treated material
  146     ..Nonplanar press couples
  147     .Spiral treated material path type
  148     .Sheet, web or strand
  149     ..Sheet elevator type
  150     ..Sheet on edge
  151     ..For flexible sheets, webs or strands
  152     ...Running lengths
  153     ....Winding reels
  154     ....Plural webs or strands
  155     ....With gas or vapor circulation for contact with treated
               material
  156     .....Fluid current supports or guidee
  157     .....Suspended loops
  158     .....With edge holding means
  159     .....With zigzag runs of treated material
  160     .....Elongated thin gas or vapor stream
  161     ....With zigzag runs of treated material
  162     ...Endless conveyers or movable grippers
  163     ...Movable treated material holders
  164     .Treated material vibrating type
  165     .Gravity flow type
  166     ..Trough or tube, with axially rotary conveyer or agitator
  167     ..Plural gravity path, plural feed and/or discharge
  168     ..With gas or vapor flow for contact with treated material
  169     ...Recirculation of treating gas or vapor
  170     ...Inverted imperforate ducts
  171     ...Shelf-to-shelf or zigzag treated material flow
  172     ....Dumping shelves or pockets
  173     ....Rotary stirrer or shelf
  174     ...Foraminous distributors or walls
  175     ..With venting means or wall
  176     ..With treated material tubes
  177     ..With heating tubes
  178     ..Shelf-to-shelf or zigzag treated material flow
  179     .Stationary receptacle or tube with agitator or conveyer
  180     ..Plural units
  181     ..With gas or vapor flow for contact with treated material
  182     ...Axial treated material feed type
  183     ..Axial treated material feed type
  184     .Rotary or swinging carrier or rack
  185     ..With agitating means or discharging scrapers
  186     ..Plural rotary or swinging units
  187     ..With gas or vapor circulation for contact with treated
             material
  188     ...Air scoops and/or suspended treated material supports
  189     .Elevator type
  190     ..Plural
  191     .Reversible or pulsating treating gas or vapor flow
  192     .Removable shelf or tray type
  193     ..Plural nonvertically aligned
  194     ..With shelf or tray handling means
  195     ..With gas or vapor circulation for contact with treated
             material
  196     ...Recirculation of treating gas or vapor
  197     ...With heater
  198     ....With liquid heater or vaporizer
  199     ...Zigzag treating gas or vapor flow
  200     ..With liquid heater or vaporizer
  201     .Houses, kilns and containers
  202     ..Article inserted type
  203     ..With conveyers providing plural or zigzag treated material
             paths
  204     ...Separable truck or tray
  205     ...Plural independent paths for treated material
  206     ...Pusher type
  207     ...Plural run endless conveyer
  208     ...Single run endless, both courses carrying treated material
  209     ..Plural treating units or compartments
  210     ...With gas or vapor circulation for contact with treated
              materiall
  211     ....Superposed floors or chambers
  212     ....Recirculation of treating gas or vapor
  213     .....Parallel circulation only
  214     ....Parallel circulation only
  215     ....With heater
  216     .....With conveyer and/or movable treated material support
  217     ....With conveyer and/or movable treated material support
  218     ..With gas or vapor circulation for contact with treated
             material
  219     ...Recirculation of treating gas or vapor
  220     ....Caused by heater action only
  221     ....Caused by jet action
  222     ....Movable gas or vapor distributor
  223     ....Plural gas or vapor forcing means
  224     ....Plural gas or vapor inlets and/or outlets
  225     .....In wall, ceiling or floor
  226     ...Tortuous gas or vapor path
  227     ...Gas or vapor flow toward or from treated material entrance or
              exit
  228     ....Counter-current to treated material motion only
  229     ...Movable gas or vapor distributor
  230     ...Plural gas or vapor forcing means
  231     ...Deflecting baffle in treating chamber
  232     ...Plural gas or vapor inlets and/or outlets
  233     ....In wall, ceiling or floor
  234     ...Caused by heater only
  235     ..With venting means
  236     .Treated material handling or conveying
  237     .Trays or floors
  238     ..Single or plural trays only
  239     .Supports
  240     ..Rods or rolls
  241     .Gas or vapor distributing and applying agitators
  242     .Chamber seals
  243 R   .Miscellaneous
  243 C   ..Car driers
  *       ******************************
  *       DIGEST
  *       ******************************
  DIG 1   Absorbents and adsorbents