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.


Enter a class/subclass code here to get a list of patent titles. Use any of the following forms:
363-131 121-55A 14-.5
that is, no embedded spaces, class and subclass seperated by a dash, and any subclass letters capitalized. Currently Design Patent titles (those in the classes of the form Dxx.yy) are not retreivable.

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Class Number: 201
 Class Title: DISTILLATION: PROCESSES, THERMOLYTIC

Subclass  Subclass
Number    Title

  1       WITH MEASURING, TESTING OR INSPECTING
  2       WITH CLEANING OF APPARATUS
  2.5     NON-MINERAL DISTILLAND WITH CATALYST OR CHEMICAL TREATMENT
           OF VOLATILE COMPONENT
  3       WITH PHYSICAL SEPARATION OF SOLID BY-PRODUCT FROM REMOVED
           ADMIXTURE
  4       .Gas or vapor containing mixture
  5       AND SHAPING TO DESIRED FORM OR CONFIGURATION
  6       .Prior to charging to carbonizing zone
  7       WITH COMMINUTING
  8       .Prior to charging to carbonizing zone
  9       AND SURFACE TREATING MATERIAL TO REDUCE OR PREVENT AGGLOMERATING
           OR FOAMING OR SWELLING DURING DISTILLATION
  10      BY CONDUCTION USING PREHEATED CHARGE CONTAINER OR PREHEATED
           INERT DISPARATE SOLID OR PREHEATED LIQUID
  11      .Liquid is metal
  12      .Particulate disparate solid
  13      USING A CARBONIZATION PRODUCT AS INDIRECT HEAT SOURCE
  14      .For heating the carbonaceous material
  15      ..Including heat by burning of product
  16      ...Solid product
  17      AND REFINING CHAR, E.G., DESULFURIZING COKE
  18      UTILIZING APPARATUS OF PARTICULAR COMPOSITION
  19      APPLYING ELECTRICAL ENERGY DIRECTLY TO MATERIAL
  20      ADDING DISPARATE NON-GASEOUS MATERIAL TO FEED
  21      FEED OF TWO OR MORE CARBONACEOUS MATERIAL (AT LEAST THE
           PREDOMINATE ONE BEING SOLID)
  22      .Char containing
  23      .Mineral oil containing
  24      .Coals only
  25      FEED OTHER THAN COAL, OIL SHALE OR WOOD
  26      IN PARALLEL STAGES SIMULTANEOUSLY
  27      INCLUDING BURNING OF VAPORIZED PRODUCT
  28      SEQUENTIALLY REMOVING, TREATING AND RECYCLING A PRODUCT
  29      .Removing and treating vapor
  30      AND FRACTIONALLY CONDENSING VAPORS
  31      FLUIDIZED BED
  32      IN A MOVING BED
  33      .Agitating
  34      .Gravitating
  35      CARBONIZING UNDER PNEUMATIC PRESSURE OR VACUUM
  36      AND ADDING DISPARATE GASEOUS MATERIAL TO THE CARBONIZING ZONE
  37      .Combustion gases
  38      .Steam containing
  39      QUENCHING CHAR WITH AN INERT MATERIAL
  40      ARRANGING THE CARBONACEOUS MATERIAL IN THE CARBONIZING ZONE
  41      MISCELLANEOUS
  *       ******************************
  *       CROSS-REFERENCE ART COLLECTIONS
  *       ******************************
  42      PARTICLE SIZE
  43      AN EXTRANEOUS, CYCLICALLY CIRCULATED, INERT HEATING GASS
  44      PLURAL DISTINCT TEMPERATURE STAGES
  45      DISTILLATE TREATMENT OR CONSERVATION