Index to the US Patent Classification

Index to the US Patent Classification

What follows is part of the Index to the US Manual of Classifications for patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retreive 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.

Enter class/subclass code: 

Y GUNS .............................. 89/1.1

YACHT SEE SHIP

YALE TM LOCK ........................ 70/492

YARD
  RAILWAY CAR .......................104/26.1+
  SHIP SPAR .........................114/95+
  STICK .............................33/483+

YARN SEE THREAD
  DOLL ..............................446/372+
  FLUID TREATMENT OF PACKAGE ........8/155+
  PRINTING ON .......................101/172
  STRUCTURE .........................57
  TESTING ...........................73/160

YEAST (SEE ALSO FUNGI)
  CELL MUTATION, GENETIC ENGINEERING 435/172.1
  COMPOSITIONS
     BODY TREATING ..................424/93.R
     BREAD MAKING WITH ..............426/18+
     EDIBLE PRODUCTS ................426
       BREAD MAKING .................426/18+
       SINGLE CELL PROTEIN ..........435/804*
  FERMENTING CARBOHYDRATES BY .......435
  PRODUCTS, MICROORGANISM PER SE ....435/243+
     ENZYME, PROCESSES FOR ..........435/183
     NONFERMENT MATERIAL COMBINED ...435/174+
       FOR STABILIZING ..............435/188
  PROPAGATION .......................435/255.1+
     APPARATUS ......................435/287+
     NONFERMENT MATERIAL COMBINED ...435/288
  YEAST, PER SE, CULTURE METHODS ....435/255.1+
     TRANSFORMANTS ..................435/254.2+
  MEASURING AND TESTING .............435/7.31

YOGHURT ............................. 426/583

YOHIMBINE ........................... 546/53

YOKE
  ANIMAL DRAFT APPLIANCE
     NECK YOKE ......................278/119+
     THILL ..........................278/51
  APPAREL ...........................2/122
  AXLE LUBRICATOR ...................384/374
  BOTTLE CLOSURE ....................215/237+
  CHUCK .............................279/19.1+
  DRAFT .............................D30/137+
  GRAPPLE ...........................294/91
  HARNESS ...........................54/3
     OX .............................54/77
  MOTOR FLUID CURRENT ...............416/244.R
  PIPE JOINT ........................285/274
  RAILWAY
     CONDUIT ........................104/142+
     DRAFT APPLIANCE CUSHIONED ......213/47+
     DRAW BAR .......................213/67.R+
     TRACK FASTENER .................238/314
     TRUCK PLATFORM .................105/214
  WATCH
     LEVER SET ......................368/199
     PENDANT SET ....................368/197+
  WRENCH SHANK GRIP .................81/152

YTTERIUM INORGANIC RECOVERY ......... 423/21.1+