U.S. PATENT AND TRADEMARK OFFICE Information Products Division Technology Assessment and Forecast (TAF) Branch |
Class | Class Title | 1996 | 1997 | 1998 | 1999 | 2000 | Total |
424 | Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) | 4 | 7 | 6 | 7 | 5 | 29 |
210 | Liquid Purification or Separation | 4 | 3 | 5 | 2 | 7 | 21 |
340 | Communications: Electrical | 3 | 5 | 3 | 4 | 5 | 20 |
405 | Hydraulic and Earth Engineering | 2 | 4 | 3 | 4 | 2 | 15 |
604 | Surgery (Medicators and Receptors) | 2 | 0 | 5 | 2 | 4 | 13 |
606 | Surgery (instruments) | 1 | 3 | 3 | 2 | 3 | 12 |
428 | Stock Material or Miscellaneous Articles | 1 | 1 | 6 | 1 | 1 | 10 |
015 | Brushing, Scrubbing, and General Cleaning | 1 | 1 | 3 | 2 | 2 | 9 |
052 | Static Structures (e.g., Buildings) | 3 | 0 | 4 | 1 | 1 | 9 |
198 | Conveyors: Power-Driven | 1 | 0 | 2 | 3 | 3 | 9 |
423 | Chemistry of Inorganic Compounds | 2 | 2 | 0 | 3 | 2 | 9 |
473 | Games Using Tangible Projectile | 2 | 0 | 5 | 2 | 0 | 9 |
209 | Classifying, Separating, and Assorting Solids | 0 | 3 | 0 | 2 | 2 | 7 |
222 | Dispensing (apparatus and process) | 2 | 1 | 1 | 1 | 2 | 7 |
429 | Chemistry: Electrical Current Producing Apparatus, Product, and Process | 0 | 3 | 1 | 3 | 0 | 7 |
532 | Organic Compounds (includes Classes 532-570) | 1 | 2 | 1 | 1 | 2 | 7 |
102 | Ammunition and Explosives | 2 | 2 | 0 | 0 | 2 | 6 |
335 | Electricity: Magnetically Operated Switches, Magnets, and Electromagnets | 5 | 1 | 0 | 0 | 0 | 6 |
414 | Material or Article Handling | 2 | 0 | 2 | 1 | 1 | 6 |
053 | Package Making | 1 | 1 | 0 | 1 | 2 | 5 |
073 | Measuring and Testing | 1 | 1 | 0 | 2 | 1 | 5 |
137 | Fluid Handling | 3 | 0 | 1 | 1 | 0 | 5 |
160 | Flexible or Portable Closure, Partition, or Panel | 1 | 3 | 0 | 1 | 0 | 5 |
220 | Receptacles | 0 | 3 | 0 | 2 | 0 | 5 |
264 | Plastic and Nonmetallic Article Shaping or Treating: Processes | 1 | 0 | 1 | 2 | 1 | 5 |
404 | Road Structure, Process, or Apparatus | 1 | 1 | 2 | 1 | 0 | 5 |
426 | Food or Edible Material: Processes, Compositions, and Products | 0 | 2 | 0 | 2 | 1 | 5 |
427 | Coating Processes | 1 | 1 | 2 | 0 | 1 | 5 |
439 | Electrical Connectors | 0 | 1 | 1 | 2 | 1 | 5 |
502 | Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making | 0 | 1 | 2 | 2 | 0 | 5 |
051 | Abrasive Tool Making Process, Material, or Composition | 1 | 2 | 0 | 0 | 1 | 4 |
072 | Metal Deforming | 1 | 1 | 0 | 2 | 0 | 4 |
128 | Surgery (includes Class 600) | 1 | 0 | 1 | 1 | 1 | 4 |
173 | Tool Driving or Impacting | 0 | 0 | 0 | 2 | 2 | 4 |
174 | Electricity: Conductors and Insulators | 0 | 1 | 3 | 0 | 0 | 4 |
175 | Boring or Penetrating the Earth | 1 | 2 | 1 | 0 | 0 | 4 |
206 | Special Receptacle or Package | 1 | 1 | 1 | 0 | 1 | 4 |
280 | Land Vehicles | 0 | 1 | 1 | 2 | 0 | 4 |
299 | Mining or In Situ Disintegration of Hard Material | 1 | 0 | 1 | 1 | 1 | 4 |
324 | Electricity: Measuring and Testing | 2 | 0 | 1 | 0 | 1 | 4 |
482 | Exercise Devices | 0 | 3 | 1 | 0 | 0 | 4 |
702 | DP: Measuring, Calibrating, or Testing (Data Processing) | 1 | 0 | 1 | 2 | 0 | 4 |
004 | Baths, Closets, Sinks, and Spittoons | 1 | 1 | 0 | 1 | 0 | 3 |
029 | Metal Working | 1 | 0 | 1 | 1 | 0 | 3 |
034 | Drying and Gas or Vapor Contact with Solids | 0 | 0 | 0 | 1 | 2 | 3 |
037 | Excavating | 1 | 0 | 0 | 2 | 0 | 3 |
042 | Firearms | 2 | 0 | 1 | 0 | 0 | 3 |
075 | Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures | 0 | 0 | 1 | 1 | 1 | 3 |
086 | Ammunition and Explosive-Charge Making | 1 | 0 | 1 | 1 | 0 | 3 |
099 | Foods and Beverages: Apparatus | 1 | 0 | 0 | 0 | 2 | 3 |
123 | Internal-Combustion Engines | 2 | 0 | 1 | 0 | 0 | 3 |
132 | Toilet | 0 | 1 | 1 | 1 | 0 | 3 |
148 | Metal Treatment | 1 | 1 | 0 | 0 | 1 | 3 |
156 | Adhesive Bonding and Miscellaneous Chemical Manufacture | 0 | 0 | 1 | 0 | 2 | 3 |
235 | Registers (e.g., cash registers, calculators, devices for counting movements of devices, etc.) | 1 | 0 | 2 | 0 | 0 | 3 |
248 | Supports (e.g., for holding articles, etc.) | 0 | 1 | 0 | 1 | 1 | 3 |
273 | Amusement Devices: Games | 0 | 1 | 0 | 1 | 1 | 3 |
290 | Prime-Mover Dynamo Plants | 0 | 2 | 0 | 0 | 1 | 3 |
297 | Chairs and Seats | 0 | 1 | 1 | 0 | 1 | 3 |
342 | Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) | 2 | 1 | 0 | 0 | 0 | 3 |
361 | Electricity: Electrical Systems and Devices | 0 | 1 | 1 | 0 | 1 | 3 |
380 | Cryptography | 0 | 1 | 1 | 0 | 1 | 3 |
383 | Flexible Bags | 1 | 2 | 0 | 0 | 0 | 3 |
422 | Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing | 0 | 1 | 0 | 2 | 0 | 3 |
435 | Chemistry: Molecular Biology and Microbiology | 0 | 0 | 0 | 2 | 1 | 3 |
441 | Buoys, Rafts, and Aquatic Devices | 1 | 0 | 0 | 1 | 1 | 3 |
518 | Chemistry: Fischer-Tropsch Processes; or Purification or Recovery of Products Thereof | 0 | 1 | 1 | 0 | 1 | 3 |
705 | DP: Financial, Business Practice, Management, or Cost/Price Determination (Data Processing) | 1 | 0 | 1 | 0 | 1 | 3 |
016 | Miscellaneous Hardware | 0 | 2 | 0 | 0 | 0 | 2 |
040 | Card, Picture, or Sign Exhibiting | 0 | 0 | 2 | 0 | 0 | 2 |
043 | Fishing, Trapping, and Vermin Destroying | 0 | 0 | 0 | 1 | 1 | 2 |
044 | Fuel and Related Compositions | 0 | 0 | 1 | 0 | 1 | 2 |
055 | Gas Separation | 2 | 0 | 0 | 0 | 0 | 2 |
074 | Machine Element or Mechanism | 0 | 0 | 1 | 0 | 1 | 2 |
081 | Tools | 0 | 0 | 0 | 0 | 2 | 2 |
089 | Ordnance | 0 | 1 | 0 | 1 | 0 | 2 |
091 | Motors: Expansible Chamber Type | 0 | 1 | 1 | 0 | 0 | 2 |
105 | Railway Rolling Stock | 1 | 0 | 1 | 0 | 0 | 2 |
109 | Safes, Bank Protection, or a Related Device | 0 | 1 | 0 | 0 | 1 | 2 |
114 | Ships | 0 | 0 | 0 | 1 | 1 | 2 |
119 | Animal Husbandry | 1 | 0 | 1 | 0 | 0 | 2 |
126 | Stoves and Furnaces | 1 | 0 | 0 | 1 | 0 | 2 |
131 | Tobacco | 0 | 0 | 0 | 0 | 2 | 2 |
138 | Pipes and Tubular Conduits | 0 | 0 | 0 | 1 | 1 | 2 |
141 | Fluent Material Handling, with Receiver or Receiver Coacting Means | 0 | 0 | 0 | 2 | 0 | 2 |
149 | Explosive and Thermic Compositions or Charges | 1 | 0 | 0 | 1 | 0 | 2 |
187 | Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle | 2 | 0 | 0 | 0 | 0 | 2 |
194 | Check-Actuated Control Mechanisms | 1 | 0 | 1 | 0 | 0 | 2 |
200 | Electricity: Circuit Makers and Breakers | 1 | 1 | 0 | 0 | 0 | 2 |
204 | Chemistry: Electrical and Wave Energy | 0 | 1 | 0 | 0 | 1 | 2 |
212 | Traversing Hoists | 0 | 0 | 2 | 0 | 0 | 2 |
236 | Automatic Temperature and Humidity Regulation | 1 | 1 | 0 | 0 | 0 | 2 |
244 | Aeronautics | 0 | 1 | 0 | 0 | 1 | 2 |
252 | Compositions | 1 | 0 | 0 | 1 | 0 | 2 |
257 | Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) | 0 | 0 | 0 | 1 | 1 | 2 |
267 | Spring Devices | 1 | 0 | 0 | 0 | 1 | 2 |
281 | Books, Strips, and Leaves | 1 | 0 | 0 | 1 | 0 | 2 |
356 | Optics: Measuring and Testing | 0 | 0 | 0 | 0 | 2 | 2 |
359 | Optics: Systems (Including Communication) and Elements | 1 | 0 | 1 | 0 | 0 | 2 |
362 | Illumination | 0 | 0 | 0 | 2 | 0 | 2 |
379 | Telephonic Communications | 1 | 0 | 1 | 0 | 0 | 2 |
382 | Image Analysis | 1 | 0 | 0 | 1 | 0 | 2 |
402 | Binder Device Releasably Engaging Aperture or Notch of Sheet | 0 | 1 | 0 | 0 | 1 | 2 |
417 | Pumps | 0 | 0 | 1 | 0 | 1 | 2 |
425 | Plastic Article or Earthenware Shaping or Treating: Apparatus | 1 | 0 | 0 | 1 | 0 | 2 |
436 | Chemistry: Analytical and Immunological Testing | 1 | 0 | 1 | 0 | 0 | 2 |
438 | Semiconductor Device Manufacturing: Process | 0 | 0 | 0 | 1 | 1 | 2 |
446 | Amusement Devices: Toys | 1 | 0 | 0 | 1 | 0 | 2 |
451 | Abrading | 0 | 1 | 0 | 1 | 0 | 2 |
475 | Planetary Gear Transmission Systems or Components | 2 | 0 | 0 | 0 | 0 | 2 |
520 | Synthetic Resins or Natural Rubbers (includes Classes 520-528) | 0 | 0 | 0 | 0 | 2 | 2 |
701 | DP: Vehicles, Navigation, and Relative Location (Data Processing) | 0 | 0 | 1 | 1 | 0 | 2 |
800 | Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes | 0 | 0 | 0 | 0 | 2 | 2 |
002 | Apparel | 1 | 0 | 0 | 0 | 0 | 1 |
005 | Beds | 0 | 0 | 0 | 1 | 0 | 1 |
047 | Plant Husbandry | 1 | 0 | 0 | 0 | 0 | 1 |
049 | Movable or Removable Closures | 0 | 0 | 1 | 0 | 0 | 1 |
060 | Power Plants | 0 | 0 | 0 | 0 | 1 | 1 |
062 | Refrigeration | 1 | 0 | 0 | 0 | 0 | 1 |
065 | Glass Manufacturing | 0 | 0 | 1 | 0 | 0 | 1 |
070 | Locks | 0 | 0 | 1 | 0 | 0 | 1 |
076 | Metal Tools and Implements, Making | 0 | 0 | 0 | 0 | 1 | 1 |
095 | Gas Separation: Processes | 1 | 0 | 0 | 0 | 0 | 1 |
096 | Gas Separation: Apparatus | 0 | 1 | 0 | 0 | 0 | 1 |
104 | Railways | 0 | 0 | 1 | 0 | 0 | 1 |
106 | Compositions: Coating or Plastic | 0 | 0 | 0 | 1 | 0 | 1 |
108 | Horizontally Supported Planar Surfaces | 0 | 0 | 1 | 0 | 0 | 1 |
117 | Single-Crystal, Oriented-Crystal, and Epitaxy Growth Processes; Non-Coating Apparatus Therefor | 0 | 0 | 1 | 0 | 0 | 1 |
127 | Sugar, Starch, and Carbohydrates | 0 | 0 | 0 | 1 | 0 | 1 |
135 | Tent, Canopy, Umbrella, or Cane | 0 | 0 | 1 | 0 | 0 | 1 |
144 | Woodworking | 1 | 0 | 0 | 0 | 0 | 1 |
152 | Resilient Tires and Wheels | 0 | 0 | 0 | 0 | 1 | 1 |
162 | Paper Making and Fiber Liberation | 0 | 0 | 1 | 0 | 0 | 1 |
165 | Heat Exchange | 0 | 1 | 0 | 0 | 0 | 1 |
172 | Earth Working | 0 | 1 | 0 | 0 | 0 | 1 |
177 | Weighing Scales | 0 | 0 | 1 | 0 | 0 | 1 |
180 | Motor Vehicles | 0 | 0 | 0 | 1 | 0 | 1 |
188 | Brakes | 0 | 0 | 1 | 0 | 0 | 1 |
192 | Clutches and Power-Stop Control | 1 | 0 | 0 | 0 | 0 | 1 |
193 | Conveyors, Chutes, Skids, Guides, and Ways | 0 | 0 | 0 | 0 | 1 | 1 |
202 | Distillation: Apparatus | 0 | 1 | 0 | 0 | 0 | 1 |
211 | Supports: Racks | 0 | 1 | 0 | 0 | 0 | 1 |
217 | Wooden Receptacles | 0 | 0 | 1 | 0 | 0 | 1 |
219 | Electric Heating | 1 | 0 | 0 | 0 | 0 | 1 |
223 | Apparel Apparatus | 0 | 1 | 0 | 0 | 0 | 1 |
224 | Package and Article Carriers | 1 | 0 | 0 | 0 | 0 | 1 |
228 | Metal Fusion Bonding | 1 | 0 | 0 | 0 | 0 | 1 |
229 | Envelopes, Wrappers, and Paperboard Boxes | 0 | 0 | 1 | 0 | 0 | 1 |
239 | Fluid Sprinkling, Spraying, and Diffusing | 0 | 0 | 0 | 0 | 1 | 1 |
250 | Radiant Energy | 1 | 0 | 0 | 0 | 0 | 1 |
254 | Implements or Apparatus for Applying Pushing or Pulling Force | 0 | 0 | 0 | 0 | 1 | 1 |
293 | Vehicle Fenders | 0 | 1 | 0 | 0 | 0 | 1 |
298 | Land Vehicles: Dumping | 1 | 0 | 0 | 0 | 0 | 1 |
312 | Supports: Cabinet Structure | 0 | 0 | 0 | 1 | 0 | 1 |
313 | Electric Lamp and Discharge Devices | 0 | 1 | 0 | 0 | 0 | 1 |
315 | Electric Lamp and Discharge Devices: Systems | 0 | 0 | 0 | 0 | 1 | 1 |
320 | Electricity: Battery or Capacitor Charging or Discharging | 0 | 1 | 0 | 0 | 0 | 1 |
337 | Electricity: Electrothermally or Thermally Actuated Switches | 0 | 0 | 1 | 0 | 0 | 1 |
341 | Coded Data Generation or Conversion | 0 | 0 | 0 | 0 | 1 | 1 |
348 | Television | 0 | 0 | 1 | 0 | 0 | 1 |
363 | Electric Power Conversion Systems | 0 | 0 | 1 | 0 | 0 | 1 |
370 | Multiplex Communications | 0 | 0 | 0 | 0 | 1 | 1 |
373 | Industrial Electric Heating Furnaces | 1 | 0 | 0 | 0 | 0 | 1 |
384 | Bearings | 1 | 0 | 0 | 0 | 0 | 1 |
392 | Electric Resistance Heating Devices | 0 | 0 | 0 | 0 | 1 | 1 |
400 | Typewriting Machines | 1 | 0 | 0 | 0 | 0 | 1 |
408 | Cutting by Use of Rotating Axially Moving Tool | 1 | 0 | 0 | 0 | 0 | 1 |
412 | Bookbinding: Process and Apparatus | 0 | 0 | 1 | 0 | 0 | 1 |
415 | Rotary Kinetic Fluid Motors or Pumps | 0 | 0 | 0 | 1 | 0 | 1 |
430 | Radiation Imagery Chemistry: Process, Composition, or Product Thereof | 0 | 0 | 0 | 1 | 0 | 1 |
432 | Heating | 0 | 0 | 0 | 0 | 1 | 1 |
433 | Dentistry | 0 | 0 | 0 | 1 | 0 | 1 |
434 | Education and Demonstration | 0 | 1 | 0 | 0 | 0 | 1 |
440 | Marine Propulsion | 0 | 0 | 0 | 0 | 1 | 1 |
501 | Compositions: Ceramic | 1 | 0 | 0 | 0 | 0 | 1 |
504 | Plant Protecting and Regulating Compositions | 1 | 0 | 0 | 0 | 0 | 1 |
510 | Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions | 0 | 1 | 0 | 0 | 0 | 1 |
585 | Chemistry of Hydrocarbon Compounds | 0 | 0 | 0 | 1 | 0 | 1 |
607 | Surgery: Light, Thermal, and Electrical Application | 0 | 1 | 0 | 0 | 0 | 1 |
ALL | ALL CLASSES | 111 | 101 | 115 | 110 | 111 | 548 |
U.S. Patent and Trademark Office
Information Products Division - TAF Branch
PK3- Suite 441
Washington, DC 20231 tel: (703) 306-2600
FAX: (703) 306-2737
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