U.S. PATENT AND TRADEMARK OFFICE Information Products Division Technology Assessment and Forecast (TAF) Branch |
Class | Class Title | 1996 | 1997 | 1998 | 1999 | 2000 | Total |
430 | Radiation Imagery Chemistry: Process, Composition, or Product Thereof | 267 | 250 | 313 | 326 | 309 | 1465 |
424 | Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) | 161 | 238 | 289 | 264 | 240 | 1192 |
399 | Electrophotography | 212 | 137 | 214 | 192 | 112 | 867 |
435 | Chemistry: Molecular Biology and Microbiology | 108 | 130 | 178 | 181 | 155 | 752 |
396 | Photography | 124 | 116 | 160 | 149 | 115 | 664 |
428 | Stock Material or Miscellaneous Articles | 108 | 108 | 119 | 142 | 128 | 605 |
520 | Synthetic Resins or Natural Rubbers (includes Classes 520-528) | 128 | 111 | 121 | 131 | 111 | 602 |
438 | Semiconductor Device Manufacturing: Process | 69 | 59 | 82 | 132 | 164 | 506 |
128 | Surgery (includes Class 600) | 97 | 75 | 113 | 92 | 121 | 498 |
347 | Incremental Printing of Symbolic Information | 60 | 54 | 134 | 82 | 127 | 457 |
532 | Organic Compounds (includes Classes 532-570) | 97 | 80 | 98 | 89 | 91 | 455 |
382 | Image Analysis | 54 | 49 | 96 | 91 | 91 | 381 |
257 | Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) | 62 | 50 | 90 | 87 | 84 | 373 |
359 | Optics: Systems (Including Communication) and Elements | 62 | 70 | 87 | 66 | 86 | 371 |
358 | Facsimile and Static Presentation Processing | 83 | 81 | 81 | 67 | 55 | 367 |
235 | Registers (e.g., cash registers, calculators, devices for counting movements of devices, etc.) | 62 | 58 | 77 | 75 | 69 | 341 |
029 | Metal Working | 60 | 56 | 73 | 60 | 69 | 318 |
345 | Computer Graphics Processing, Operator Interface Processing, and Selective Visual Display Systems | 43 | 55 | 76 | 62 | 64 | 300 |
361 | Electricity: Electrical Systems and Devices | 37 | 41 | 78 | 75 | 62 | 293 |
340 | Communications: Electrical | 47 | 54 | 66 | 54 | 58 | 279 |
606 | Surgery (instruments) | 52 | 67 | 65 | 53 | 39 | 276 |
062 | Refrigeration | 47 | 43 | 49 | 55 | 67 | 261 |
250 | Radiant Energy | 58 | 54 | 65 | 41 | 41 | 259 |
427 | Coating Processes | 46 | 46 | 49 | 56 | 56 | 253 |
709 | Multiple Computer or Process Coordinating (Electrical Computers and Digital Processing Systems) | 30 | 18 | 54 | 54 | 93 | 249 |
156 | Adhesive Bonding and Miscellaneous Chemical Manufacture | 50 | 42 | 52 | 52 | 48 | 244 |
324 | Electricity: Measuring and Testing | 68 | 38 | 44 | 44 | 45 | 239 |
707 | DP: Database and File Management, Data Structures, Or Document Processing (Data Processing) | 31 | 23 | 57 | 64 | 58 | 233 |
356 | Optics: Measuring and Testing | 28 | 42 | 49 | 46 | 54 | 219 |
348 | Television | 48 | 42 | 41 | 40 | 47 | 218 |
073 | Measuring and Testing | 43 | 34 | 48 | 40 | 52 | 217 |
210 | Liquid Purification or Separation | 49 | 39 | 52 | 29 | 45 | 214 |
206 | Special Receptacle or Package | 44 | 27 | 54 | 42 | 40 | 207 |
375 | Pulse or Digital Communications | 31 | 34 | 45 | 41 | 47 | 198 |
604 | Surgery (Medicators and Receptors) | 38 | 31 | 47 | 45 | 36 | 197 |
002 | Apparel | 42 | 27 | 40 | 39 | 40 | 188 |
439 | Electrical Connectors | 24 | 35 | 40 | 44 | 43 | 186 |
705 | DP: Financial, Business Practice, Management, or Cost/Price Determination (Data Processing) | 14 | 25 | 27 | 56 | 63 | 185 |
052 | Static Structures (e.g., Buildings) | 36 | 43 | 41 | 27 | 30 | 177 |
264 | Plastic and Nonmetallic Article Shaping or Treating: Processes | 31 | 32 | 39 | 28 | 32 | 162 |
219 | Electric Heating | 29 | 26 | 26 | 23 | 45 | 149 |
714 | Error Detection/Correction and Fault Detection/Recovery | 27 | 33 | 38 | 27 | 20 | 145 |
385 | Optical Waveguides | 28 | 34 | 26 | 33 | 23 | 144 |
370 | Multiplex Communications | 24 | 14 | 19 | 29 | 49 | 135 |
530 | Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof | 15 | 24 | 40 | 29 | 24 | 132 |
362 | Illumination | 22 | 19 | 25 | 34 | 31 | 131 |
379 | Telephonic Communications | 24 | 17 | 46 | 21 | 23 | 131 |
248 | Supports (e.g., for holding articles, etc.) | 18 | 16 | 37 | 32 | 27 | 130 |
712 | Processing Architectures and Instruction Processing, e.g., Processors (Electrical Computers and Digital Processing Systems) | 19 | 21 | 44 | 17 | 28 | 129 |
252 | Compositions | 21 | 15 | 27 | 34 | 31 | 128 |
310 | Electrical Generator or Motor Structure | 19 | 21 | 33 | 28 | 27 | 128 |
711 | Memory (Electrical Computers and Digital Processing Systems) | 17 | 28 | 31 | 26 | 26 | 128 |
369 | Dynamic Information Storage or Retrieval | 23 | 24 | 36 | 18 | 24 | 125 |
060 | Power Plants | 26 | 25 | 32 | 20 | 17 | 120 |
429 | Chemistry: Electrical Current Producing Apparatus, Product, and Process | 19 | 23 | 19 | 21 | 37 | 119 |
106 | Compositions: Coating or Plastic | 17 | 18 | 35 | 23 | 25 | 118 |
378 | X-Ray or Gamma Ray Systems or Devices | 27 | 30 | 16 | 22 | 23 | 118 |
473 | Games Using Tangible Projectile | 31 | 17 | 30 | 20 | 20 | 118 |
015 | Brushing, Scrubbing, and General Cleaning | 31 | 25 | 18 | 23 | 20 | 117 |
426 | Food or Edible Material: Processes, Compositions, and Products | 12 | 27 | 22 | 23 | 31 | 115 |
503 | Record Receiver Having Plural Interactive Leaves or a Colorless Color Former, Method of Use, or Developer Therefor | 22 | 22 | 26 | 27 | 16 | 113 |
271 | Sheet Feeding or Delivering | 16 | 25 | 19 | 29 | 21 | 110 |
704 | DP: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression (Data Processing) | 14 | 7 | 22 | 31 | 34 | 108 |
165 | Heat Exchange | 10 | 24 | 29 | 25 | 19 | 107 |
355 | Photocopying | 9 | 16 | 33 | 22 | 25 | 105 |
422 | Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing | 28 | 17 | 19 | 23 | 18 | 105 |
280 | Land Vehicles | 15 | 21 | 22 | 17 | 29 | 104 |
713 | Support (Electrical Computers and Digital Processing Systems) | 15 | 13 | 27 | 25 | 24 | 104 |
313 | Electric Lamp and Discharge Devices | 16 | 10 | 23 | 33 | 20 | 102 |
365 | Static Information Storage and Retrieval | 20 | 13 | 16 | 27 | 26 | 102 |
702 | DP: Measuring, Calibrating, or Testing (Data Processing) | 29 | 18 | 22 | 17 | 16 | 102 |
482 | Exercise Devices | 19 | 19 | 24 | 21 | 17 | 100 |
174 | Electricity: Conductors and Insulators | 14 | 22 | 20 | 27 | 16 | 99 |
433 | Dentistry | 21 | 11 | 23 | 27 | 17 | 99 |
024 | Buckles, Buttons, Clasps, Etc. | 20 | 18 | 15 | 22 | 23 | 98 |
351 | Optics: Eye Examining, Vision Testing and Correcting | 15 | 17 | 18 | 25 | 20 | 95 |
220 | Receptacles | 19 | 11 | 20 | 27 | 17 | 94 |
451 | Abrading | 24 | 13 | 14 | 19 | 24 | 94 |
211 | Supports: Racks | 19 | 13 | 18 | 20 | 22 | 92 |
137 | Fluid Handling | 14 | 12 | 21 | 16 | 28 | 91 |
341 | Coded Data Generation or Conversion | 14 | 30 | 20 | 13 | 12 | 89 |
415 | Rotary Kinetic Fluid Motors or Pumps | 7 | 18 | 16 | 20 | 28 | 89 |
501 | Compositions: Ceramic | 28 | 22 | 12 | 11 | 16 | 89 |
710 | Input/Output (Electrical Computers and Digital Processing Systems) | 20 | 25 | 12 | 17 | 15 | 89 |
119 | Animal Husbandry | 12 | 14 | 20 | 21 | 21 | 88 |
436 | Chemistry: Analytical and Immunological Testing | 16 | 13 | 25 | 16 | 18 | 88 |
342 | Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) | 28 | 12 | 15 | 21 | 11 | 87 |
315 | Electric Lamp and Discharge Devices: Systems | 17 | 10 | 17 | 23 | 17 | 84 |
434 | Education and Demonstration | 18 | 11 | 17 | 17 | 21 | 84 |
700 | DP: Generic Control Systems or Specific Applications (Data Processing) | 11 | 13 | 32 | 19 | 9 | 84 |
623 | Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor | 24 | 17 | 14 | 13 | 15 | 83 |
040 | Card, Picture, or Sign Exhibiting | 13 | 13 | 13 | 24 | 19 | 82 |
132 | Toilet | 10 | 7 | 19 | 26 | 19 | 81 |
216 | Etching a Substrate: Processes | 17 | 16 | 25 | 11 | 12 | 81 |
446 | Amusement Devices: Toys | 14 | 10 | 23 | 13 | 21 | 81 |
224 | Package and Article Carriers | 13 | 15 | 16 | 20 | 16 | 80 |
297 | Chairs and Seats | 12 | 14 | 16 | 12 | 26 | 80 |
204 | Chemistry: Electrical and Wave Energy | 15 | 12 | 20 | 15 | 17 | 79 |
222 | Dispensing (apparatus and process) | 16 | 13 | 16 | 16 | 18 | 79 |
134 | Cleaning and Liquid Contact with Solids | 11 | 16 | 18 | 21 | 12 | 78 |
228 | Metal Fusion Bonding | 10 | 8 | 16 | 15 | 29 | 78 |
400 | Typewriting Machines | 10 | 8 | 19 | 19 | 21 | 77 |
455 | Telecommunications | 9 | 8 | 15 | 23 | 22 | 77 |
118 | Coating Apparatus | 19 | 20 | 14 | 13 | 10 | 76 |
273 | Amusement Devices: Games | 16 | 10 | 23 | 13 | 13 | 75 |
242 | Winding, Tensioning, or Guiding | 18 | 11 | 18 | 11 | 16 | 74 |
205 | Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions | 19 | 9 | 11 | 14 | 20 | 73 |
239 | Fluid Sprinkling, Spraying, and Diffusing | 8 | 15 | 10 | 17 | 23 | 73 |
363 | Electric Power Conversion Systems | 15 | 15 | 10 | 21 | 12 | 73 |
162 | Paper Making and Fiber Liberation | 12 | 12 | 9 | 16 | 23 | 72 |
084 | Music | 19 | 9 | 10 | 19 | 14 | 71 |
123 | Internal-Combustion Engines | 15 | 15 | 14 | 13 | 14 | 71 |
070 | Locks | 13 | 12 | 21 | 12 | 12 | 70 |
101 | Printing | 12 | 8 | 18 | 17 | 14 | 69 |
474 | Endless Belt Power Transmission Systems or Components | 7 | 16 | 18 | 14 | 14 | 69 |
349 | Liquid Crystal Cells, Elements and Systems | 4 | 6 | 18 | 17 | 23 | 68 |
095 | Gas Separation: Processes | 11 | 11 | 15 | 15 | 15 | 67 |
327 | Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems | 20 | 5 | 13 | 15 | 14 | 67 |
005 | Beds | 16 | 5 | 17 | 11 | 15 | 64 |
065 | Glass Manufacturing | 9 | 15 | 19 | 14 | 7 | 64 |
335 | Electricity: Magnetically Operated Switches, Magnets, and Electromagnets | 16 | 13 | 11 | 11 | 13 | 64 |
318 | Electricity: Motive Power Systems | 13 | 11 | 17 | 11 | 11 | 63 |
360 | Dynamic Magnetic Information Storage or Retrieval | 8 | 13 | 12 | 13 | 16 | 62 |
004 | Baths, Closets, Sinks, and Spittoons | 8 | 6 | 16 | 16 | 14 | 60 |
417 | Pumps | 10 | 15 | 7 | 16 | 12 | 60 |
425 | Plastic Article or Earthenware Shaping or Treating: Apparatus | 14 | 13 | 13 | 11 | 9 | 60 |
706 | DP: Artificial Intelligence (Data Processing) | 13 | 15 | 16 | 9 | 4 | 57 |
716 | DP: Design and Analysis of Circuit or Semiconductor Mask (Data Processing) | 14 | 10 | 12 | 11 | 9 | 56 |
083 | Cutting | 5 | 6 | 18 | 17 | 9 | 55 |
423 | Chemistry of Inorganic Compounds | 13 | 9 | 7 | 12 | 14 | 55 |
343 | Communications: Radio Wave Antennas | 7 | 7 | 5 | 13 | 22 | 54 |
405 | Hydraulic and Earth Engineering | 8 | 11 | 15 | 13 | 6 | 53 |
431 | Combustion | 10 | 9 | 9 | 18 | 7 | 53 |
502 | Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making | 15 | 9 | 11 | 9 | 9 | 53 |
725 | Interactive Video Distribution Systems | 12 | 9 | 18 | 8 | 6 | 53 |
034 | Drying and Gas or Vapor Contact with Solids | 10 | 7 | 9 | 7 | 19 | 52 |
030 | Cutlery | 11 | 4 | 17 | 9 | 10 | 51 |
141 | Fluent Material Handling, with Receiver or Receiver Coacting Means | 12 | 10 | 7 | 14 | 8 | 51 |
033 | Geometrical Instruments | 7 | 8 | 12 | 12 | 11 | 50 |
148 | Metal Treatment | 11 | 7 | 16 | 3 | 13 | 50 |
277 | Seal for a Joint or Juncture | 8 | 8 | 5 | 9 | 20 | 50 |
307 | Electrical Transmission or Interconnection Systems | 7 | 7 | 12 | 13 | 11 | 50 |
372 | Coherent Light Generators | 9 | 10 | 10 | 12 | 9 | 50 |
384 | Bearings | 6 | 8 | 17 | 10 | 9 | 50 |
708 | Arithmetic Processing and Calculating (Electrical Computers) | 4 | 17 | 10 | 7 | 12 | 50 |
099 | Foods and Beverages: Apparatus | 9 | 4 | 9 | 15 | 11 | 48 |
244 | Aeronautics | 11 | 8 | 9 | 8 | 12 | 48 |
081 | Tools | 7 | 2 | 7 | 10 | 21 | 47 |
414 | Material or Article Handling | 12 | 8 | 12 | 6 | 9 | 47 |
053 | Package Making | 13 | 9 | 6 | 8 | 10 | 46 |
703 | DP: Structural Design, Modeling, Simulation, and Emulation (Data Processing) | 13 | 3 | 8 | 8 | 14 | 46 |
016 | Miscellaneous Hardware | 9 | 5 | 8 | 14 | 9 | 45 |
223 | Apparel Apparatus | 4 | 13 | 6 | 4 | 18 | 45 |
292 | Closure Fasteners | 9 | 9 | 10 | 6 | 11 | 45 |
296 | Land Vehicles: Bodies and Tops | 9 | 10 | 11 | 7 | 8 | 45 |
510 | Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions | 4 | 4 | 6 | 18 | 13 | 45 |
294 | Handling: Hand and Hoist-Line Implements | 6 | 6 | 8 | 9 | 15 | 44 |
326 | Electronic Digital Logic Circuitry | 12 | 3 | 7 | 8 | 14 | 44 |
701 | DP: Vehicles, Navigation, and Relative Location (Data Processing) | 8 | 5 | 8 | 9 | 14 | 44 |
800 | Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes | 2 | 8 | 9 | 13 | 12 | 44 |
114 | Ships | 7 | 9 | 8 | 8 | 11 | 43 |
182 | Fire Escape, Ladder, or Scaffold | 5 | 6 | 6 | 13 | 12 | 42 |
283 | Printed Matter | 6 | 6 | 9 | 11 | 10 | 42 |
381 | Electrical Audio Signal Processing Systems and Devices | 6 | 5 | 17 | 7 | 7 | 42 |
074 | Machine Element or Mechanism | 9 | 6 | 10 | 9 | 7 | 41 |
401 | Coating Implements with Material Supply | 5 | 1 | 13 | 15 | 7 | 41 |
508 | Solid Anti-Friction Devices, Materials Therefor, Lubricant or Separate Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions | 13 | 5 | 8 | 5 | 10 | 41 |
380 | Cryptography | 7 | 4 | 11 | 7 | 11 | 40 |
602 | Surgery: Splint, Brace, or Bandage | 10 | 6 | 7 | 5 | 11 | 39 |
063 | Jewelry | 6 | 11 | 8 | 6 | 7 | 38 |
215 | Bottles and Jars | 7 | 8 | 10 | 8 | 5 | 38 |
366 | Agitating (e.g., of articles and materials) | 11 | 6 | 8 | 6 | 7 | 38 |
475 | Planetary Gear Transmission Systems or Components | 3 | 11 | 5 | 7 | 11 | 37 |
043 | Fishing, Trapping, and Vermin Destroying | 11 | 5 | 2 | 12 | 6 | 36 |
135 | Tent, Canopy, Umbrella, or Cane | 4 | 11 | 9 | 10 | 2 | 36 |
323 | Electricity: Power Supply or Regulation Systems | 7 | 6 | 13 | 6 | 4 | 36 |
353 | Optics: Image Projectors | 7 | 8 | 8 | 8 | 5 | 36 |
368 | Horology: Time Measuring Systems or Devices | 5 | 6 | 9 | 11 | 5 | 36 |
383 | Flexible Bags | 7 | 6 | 9 | 7 | 7 | 36 |
418 | Rotary Expansible Chamber Devices | 9 | 3 | 6 | 3 | 15 | 36 |
717 | DP: Software Development, Installation, and Management (Data Processing) | 6 | 1 | 6 | 12 | 11 | 36 |
229 | Envelopes, Wrappers, and Paperboard Boxes | 11 | 4 | 9 | 7 | 4 | 35 |
160 | Flexible or Portable Closure, Partition, or Panel | 6 | 6 | 9 | 5 | 8 | 34 |
200 | Electricity: Circuit Makers and Breakers | 5 | 6 | 4 | 14 | 5 | 34 |
241 | Solid Material Comminution or Disintegration | 10 | 10 | 4 | 8 | 2 | 34 |
036 | Boots, Shoes, and Leggings | 6 | 4 | 13 | 5 | 5 | 33 |
180 | Motor Vehicles | 8 | 6 | 4 | 6 | 9 | 33 |
312 | Supports: Cabinet Structure | 8 | 3 | 8 | 9 | 4 | 32 |
049 | Movable or Removable Closures | 10 | 6 | 4 | 7 | 4 | 31 |
075 | Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures | 6 | 7 | 6 | 8 | 4 | 31 |
374 | Thermal Measuring and Testing | 4 | 8 | 6 | 4 | 9 | 31 |
442 | Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, Etc.) | 5 | 6 | 7 | 4 | 9 | 31 |
493 | Manufacturing Container or Tube From Paper; or Other Manufacturing From a Sheet or Web | 7 | 5 | 7 | 3 | 9 | 31 |
072 | Metal Deforming | 5 | 8 | 3 | 7 | 7 | 30 |
188 | Brakes | 6 | 4 | 9 | 4 | 7 | 30 |
261 | Gas and Liquid Contact Apparatus | 6 | 4 | 4 | 5 | 11 | 30 |
607 | Surgery: Light, Thermal, and Electrical Application | 5 | 2 | 7 | 9 | 7 | 30 |
164 | Metal Founding | 3 | 5 | 7 | 9 | 5 | 29 |
320 | Electricity: Battery or Capacitor Charging or Discharging | 4 | 7 | 2 | 6 | 10 | 29 |
330 | Amplifiers | 5 | 5 | 9 | 4 | 6 | 29 |
411 | Expanded, Threaded, Driven, Headed, Tool-Deformed, or Locked-Threaded Fastener | 6 | 3 | 6 | 4 | 10 | 29 |
416 | Fluid Reaction Surfaces (i.e., Impellers) | 7 | 3 | 5 | 6 | 8 | 29 |
209 | Classifying, Separating, and Assorting Solids | 6 | 8 | 1 | 5 | 8 | 28 |
221 | Article Dispensing | 7 | 5 | 8 | 6 | 2 | 28 |
270 | Sheet-Material Associating | 7 | 14 | 5 | 0 | 2 | 28 |
346 | Recorders | 0 | 0 | 1 | 12 | 15 | 28 |
367 | Communications, Electrical: Acoustic Wave Systems and Devices | 11 | 5 | 4 | 3 | 5 | 28 |
601 | Surgery: Kinesitherapy | 7 | 3 | 10 | 5 | 3 | 28 |
047 | Plant Husbandry | 6 | 5 | 3 | 5 | 8 | 27 |
108 | Horizontally Supported Planar Surfaces | 6 | 0 | 8 | 10 | 3 | 27 |
181 | Acoustics | 5 | 1 | 9 | 8 | 4 | 27 |
042 | Firearms | 3 | 5 | 9 | 3 | 6 | 26 |
376 | Induced Nuclear Reactions: Processes, Systems, and Elements | 8 | 5 | 6 | 6 | 0 | 25 |
056 | Harvesters | 7 | 4 | 4 | 6 | 3 | 24 |
126 | Stoves and Furnaces | 3 | 2 | 5 | 6 | 8 | 24 |
403 | Joints and Connections | 7 | 4 | 8 | 3 | 2 | 24 |
445 | Electric Lamp or Space Discharge Component or Device Manufacturing | 4 | 5 | 6 | 4 | 5 | 24 |
505 | Superconductor Technology: Apparatus, Material, Process | 7 | 7 | 4 | 4 | 2 | 24 |
008 | Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers | 6 | 2 | 4 | 7 | 4 | 23 |
068 | Textiles: Fluid Treating Apparatus | 14 | 5 | 1 | 1 | 2 | 23 |
096 | Gas Separation: Apparatus | 3 | 3 | 7 | 8 | 2 | 23 |
333 | Wave Transmission Lines and Networks | 3 | 3 | 5 | 5 | 7 | 23 |
408 | Cutting by Use of Rotating Axially Moving Tool | 5 | 3 | 8 | 3 | 4 | 23 |
192 | Clutches and Power-Stop Control | 5 | 2 | 3 | 5 | 7 | 22 |
432 | Heating | 0 | 2 | 7 | 10 | 3 | 22 |
454 | Ventilation | 1 | 2 | 5 | 7 | 7 | 22 |
585 | Chemistry of Hydrocarbon Compounds | 11 | 5 | 5 | 0 | 1 | 22 |
044 | Fuel and Related Compositions | 7 | 4 | 4 | 3 | 3 | 21 |
051 | Abrasive Tool Making Process, Material, or Composition | 6 | 4 | 4 | 3 | 4 | 21 |
055 | Gas Separation | 5 | 2 | 3 | 4 | 7 | 21 |
198 | Conveyors: Power-Driven | 5 | 4 | 4 | 4 | 4 | 21 |
251 | Valves and Valve Actuation | 3 | 2 | 4 | 4 | 8 | 21 |
254 | Implements or Apparatus for Applying Pushing or Pulling Force | 2 | 6 | 4 | 6 | 3 | 21 |
303 | Fluid-Pressure and Analogous Brake Systems | 3 | 2 | 2 | 4 | 10 | 21 |
419 | Powder Metallurgy Processes | 8 | 6 | 2 | 4 | 0 | 20 |
124 | Mechanical Guns and Projectors | 4 | 4 | 3 | 3 | 5 | 19 |
227 | Elongated-Member-Driving Apparatus | 8 | 4 | 3 | 2 | 2 | 19 |
246 | Railway Switches and Signals | 2 | 9 | 3 | 2 | 3 | 19 |
269 | Work Holders | 4 | 1 | 1 | 6 | 7 | 19 |
285 | Pipe Joints or Couplings | 5 | 3 | 5 | 4 | 2 | 19 |
409 | Gear Cutting, Milling, or Planing | 2 | 2 | 5 | 6 | 4 | 19 |
104 | Railways | 2 | 5 | 4 | 4 | 3 | 18 |
117 | Single-Crystal, Oriented-Crystal, and Epitaxy Growth Processes; Non-Coating Apparatus Therefor | 5 | 3 | 3 | 4 | 3 | 18 |
136 | Batteries: Thermoelectric and Photoelectric | 3 | 2 | 3 | 2 | 8 | 18 |
450 | Foundation Garments | 2 | 4 | 2 | 6 | 4 | 18 |
138 | Pipes and Tubular Conduits | 1 | 1 | 5 | 4 | 6 | 17 |
169 | Fire Extinguishers | 2 | 3 | 2 | 5 | 5 | 17 |
226 | Advancing Material of Indeterminate Length | 2 | 1 | 5 | 3 | 6 | 17 |
266 | Metallurgical Apparatus | 3 | 5 | 2 | 3 | 4 | 17 |
336 | Inductor Devices | 3 | 1 | 6 | 5 | 2 | 17 |
463 | Amusement Devices: Games | 3 | 4 | 4 | 5 | 1 | 17 |
516 | Colloid Systems and Wetting Agents, Subcombinations Thereof, Processes of Making, Stabilizing, Breaking, or Inhibiting | 4 | 6 | 1 | 5 | 1 | 17 |
190 | Trunks and Hand-Carried Luggage | 3 | 2 | 3 | 6 | 2 | 16 |
208 | Mineral Oils: Processes and Products | 2 | 3 | 5 | 3 | 3 | 16 |
112 | Sewing | 4 | 2 | 3 | 3 | 3 | 15 |
173 | Tool Driving or Impacting | 1 | 2 | 4 | 4 | 4 | 15 |
338 | Electrical Resistors | 4 | 3 | 3 | 3 | 2 | 15 |
089 | Ordnance | 5 | 3 | 1 | 4 | 1 | 14 |
131 | Tobacco | 0 | 2 | 4 | 5 | 3 | 14 |
177 | Weighing Scales | 3 | 2 | 1 | 5 | 3 | 14 |
082 | Turning (e.g., for metal working) | 1 | 4 | 2 | 6 | 0 | 13 |
187 | Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle | 1 | 2 | 3 | 3 | 4 | 13 |
279 | Chucks or Sockets | 1 | 1 | 5 | 4 | 2 | 13 |
331 | Oscillators | 3 | 4 | 2 | 3 | 1 | 13 |
588 | Hazardous or Toxic Waste Destruction or Containment | 4 | 3 | 2 | 3 | 1 | 13 |
110 | Furnaces | 3 | 0 | 6 | 2 | 1 | 12 |
122 | Liquid Heaters and Vaporizers | 0 | 1 | 4 | 5 | 2 | 12 |
194 | Check-Actuated Control Mechanisms | 3 | 1 | 2 | 4 | 2 | 12 |
236 | Automatic Temperature and Humidity Regulation | 4 | 0 | 2 | 3 | 3 | 12 |
404 | Road Structure, Process, or Apparatus | 4 | 0 | 3 | 2 | 3 | 12 |
440 | Marine Propulsion | 1 | 7 | 0 | 2 | 2 | 12 |
441 | Buoys, Rafts, and Aquatic Devices | 1 | 1 | 2 | 3 | 5 | 12 |
007 | Compound Hand Tools | 1 | 0 | 3 | 5 | 2 | 11 |
166 | Wells (shafts or deep borings in the earth, e.g., for oil and gas) | 0 | 1 | 2 | 7 | 1 | 11 |
386 | Television Signal Processing for Dynamic Recording or Reproducing | 2 | 2 | 4 | 2 | 1 | 11 |
048 | Gas: Heating and Illuminating | 5 | 1 | 2 | 2 | 0 | 10 |
066 | Textiles: Knitting | 1 | 3 | 2 | 3 | 1 | 10 |
225 | Severing by Tearing or Breaking | 3 | 1 | 3 | 3 | 0 | 10 |
281 | Books, Strips, and Leaves | 0 | 3 | 2 | 3 | 2 | 10 |
464 | Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts | 1 | 3 | 0 | 3 | 3 | 10 |
014 | Bridges | 1 | 1 | 3 | 2 | 2 | 9 |
092 | Expansible Chamber Devices | 3 | 2 | 1 | 3 | 0 | 9 |
125 | Stone Working | 1 | 3 | 2 | 2 | 1 | 9 |
150 | Purses, Wallets, and Protective Covers | 0 | 2 | 2 | 2 | 3 | 9 |
392 | Electric Resistance Heating Devices | 0 | 3 | 2 | 3 | 1 | 9 |
402 | Binder Device Releasably Engaging Aperture or Notch of Sheet | 1 | 2 | 0 | 2 | 4 | 9 |
492 | Roll or Roller | 1 | 3 | 2 | 1 | 2 | 9 |
512 | Perfume Compositions | 2 | 1 | 1 | 2 | 3 | 9 |
037 | Excavating | 3 | 1 | 2 | 1 | 1 | 8 |
059 | Chain, Staple, and Horseshoe Making | 3 | 2 | 2 | 1 | 0 | 8 |
102 | Ammunition and Explosives | 0 | 3 | 1 | 3 | 1 | 8 |
172 | Earth Working | 1 | 0 | 2 | 2 | 3 | 8 |
218 | High-Voltage Switches with Arc Preventing or Extinguishing Devices | 0 | 2 | 4 | 1 | 1 | 8 |
026 | Textiles: Cloth Finishing | 1 | 2 | 1 | 2 | 1 | 7 |
116 | Signals and Indicators | 1 | 3 | 1 | 0 | 2 | 7 |
184 | Lubrication | 1 | 1 | 0 | 1 | 4 | 7 |
202 | Distillation: Apparatus | 1 | 0 | 0 | 5 | 1 | 7 |
249 | Static Molds | 2 | 2 | 1 | 1 | 1 | 7 |
256 | Fences | 2 | 0 | 3 | 1 | 1 | 7 |
290 | Prime-Mover Dynamo Plants | 1 | 0 | 1 | 1 | 4 | 7 |
420 | Alloys or Metallic Compositions | 1 | 0 | 2 | 2 | 2 | 7 |
472 | Amusement Devices | 2 | 0 | 0 | 2 | 3 | 7 |
504 | Plant Protecting and Regulating Compositions | 1 | 3 | 0 | 3 | 0 | 7 |
001 | ** Classification Undetermined ** | 0 | 0 | 2 | 2 | 2 | 6 |
100 | Presses | 1 | 1 | 1 | 2 | 1 | 6 |
144 | Woodworking | 1 | 0 | 2 | 2 | 1 | 6 |
152 | Resilient Tires and Wheels | 3 | 0 | 1 | 0 | 2 | 6 |
203 | Distillation: Processes, Separatory | 2 | 2 | 0 | 0 | 2 | 6 |
267 | Spring Devices | 3 | 1 | 0 | 0 | 2 | 6 |
373 | Industrial Electric Heating Furnaces | 1 | 0 | 1 | 0 | 4 | 6 |
377 | Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems | 0 | 2 | 3 | 1 | 0 | 6 |
407 | Cutters, for Shaping | 0 | 3 | 0 | 2 | 1 | 6 |
071 | Chemistry: Fertilizers | 1 | 2 | 2 | 0 | 0 | 5 |
175 | Boring or Penetrating the Earth | 2 | 2 | 1 | 0 | 0 | 5 |
193 | Conveyors, Chutes, Skids, Guides, and Ways | 0 | 0 | 0 | 4 | 1 | 5 |
301 | Land Vehicles: Wheels and Axles | 3 | 0 | 0 | 1 | 1 | 5 |
329 | Demodulators | 2 | 0 | 1 | 1 | 1 | 5 |
352 | Optics: Motion Pictures | 1 | 2 | 1 | 1 | 0 | 5 |
412 | Bookbinding: Process and Apparatus | 0 | 1 | 1 | 2 | 1 | 5 |
038 | Textiles: Ironing or Smoothing | 1 | 1 | 1 | 1 | 0 | 4 |
076 | Metal Tools and Implements, Making | 0 | 1 | 2 | 0 | 1 | 4 |
237 | Heating Systems | 1 | 0 | 1 | 1 | 1 | 4 |
293 | Vehicle Fenders | 0 | 2 | 0 | 1 | 1 | 4 |
300 | Brush, Broom, and Mop Making | 1 | 2 | 0 | 1 | 0 | 4 |
322 | Electricity: Single Generator Systems | 1 | 0 | 3 | 0 | 0 | 4 |
337 | Electricity: Electrothermally or Thermally Actuated Switches | 2 | 0 | 0 | 1 | 1 | 4 |
410 | Freight Accommodation On Freight Carrier | 2 | 0 | 0 | 1 | 1 | 4 |
027 | Undertaking | 1 | 0 | 1 | 1 | 0 | 3 |
091 | Motors: Expansible Chamber Type | 1 | 1 | 1 | 0 | 0 | 3 |
105 | Railway Rolling Stock | 2 | 0 | 1 | 0 | 0 | 3 |
109 | Safes, Bank Protection, or a Related Device | 0 | 2 | 0 | 1 | 0 | 3 |
168 | Farriery | 0 | 1 | 2 | 0 | 0 | 3 |
178 | Telegraphy | 1 | 1 | 1 | 0 | 0 | 3 |
185 | Motors: Spring, Weight, or Animal Powered | 0 | 2 | 0 | 1 | 0 | 3 |
191 | Electricity: Transmission To Vehicles | 1 | 1 | 0 | 0 | 1 | 3 |
212 | Traversing Hoists | 0 | 0 | 1 | 1 | 1 | 3 |
299 | Mining or In Situ Disintegration of Hard Material | 0 | 0 | 1 | 0 | 2 | 3 |
406 | Conveyors: Fluid Current | 0 | 0 | 0 | 2 | 1 | 3 |
452 | Butchering | 1 | 0 | 1 | 0 | 1 | 3 |
483 | Tool Changing | 0 | 0 | 1 | 2 | 0 | 3 |
518 | Chemistry: Fischer-Tropsch Processes; or Purification or Recovery of Products Thereof | 2 | 0 | 1 | 0 | 0 | 3 |
012 | Boot and Shoe Making | 1 | 0 | 0 | 1 | 0 | 2 |
023 | Chemistry: Physical Processes | 0 | 1 | 1 | 0 | 0 | 2 |
054 | Harness (for animals) | 0 | 0 | 1 | 1 | 0 | 2 |
057 | Textiles: Spinning, Twisting, and Twining | 0 | 1 | 1 | 0 | 0 | 2 |
111 | Planting | 1 | 1 | 0 | 0 | 0 | 2 |
127 | Sugar, Starch, and Carbohydrates | 0 | 1 | 1 | 0 | 0 | 2 |
140 | Wireworking | 1 | 0 | 0 | 1 | 0 | 2 |
149 | Explosive and Thermic Compositions or Charges | 0 | 0 | 2 | 0 | 0 | 2 |
159 | Concentrating Evaporators | 1 | 0 | 0 | 0 | 1 | 2 |
213 | Railway Draft Appliances | 1 | 0 | 0 | 1 | 0 | 2 |
295 | Railway Wheels and Axles | 0 | 2 | 0 | 0 | 0 | 2 |
332 | Modulators | 2 | 0 | 0 | 0 | 0 | 2 |
453 | Coin Handling | 0 | 0 | 1 | 1 | 0 | 2 |
477 | Interrelated Power Delivery Controls, Including Engine Control | 0 | 1 | 0 | 1 | 0 | 2 |
086 | Ammunition and Explosive-Charge Making | 0 | 1 | 0 | 0 | 0 | 1 |
087 | Textiles: Braiding, Netting, and Lace Making | 1 | 0 | 0 | 0 | 0 | 1 |
139 | Textiles: Weaving | 0 | 0 | 0 | 1 | 0 | 1 |
142 | Wood Turning | 0 | 0 | 0 | 0 | 1 | 1 |
157 | Wheelwright Machines | 0 | 0 | 0 | 0 | 1 | 1 |
171 | Unearthing Plants or Buried Objects | 0 | 0 | 1 | 0 | 0 | 1 |
186 | Merchandising | 0 | 1 | 0 | 0 | 0 | 1 |
238 | Railways: Surface Track | 1 | 0 | 0 | 0 | 0 | 1 |
245 | Wire Fabrics and Structure | 0 | 0 | 0 | 0 | 1 | 1 |
260 | Chemistry of Carbon Compounds | 1 | 0 | 0 | 0 | 0 | 1 |
291 | Track Sanders | 1 | 0 | 0 | 0 | 0 | 1 |
298 | Land Vehicles: Dumping | 0 | 0 | 0 | 0 | 1 | 1 |
305 | Wheel Substitutes for Land Vehicles | 0 | 0 | 0 | 1 | 0 | 1 |
449 | Bee Culture (propagating, raising, caring for bees) | 0 | 0 | 0 | 1 | 0 | 1 |
494 | Imperforate Bowl: Centrifugal Separators | 1 | 0 | 0 | 0 | 0 | 1 |
ALL | ALL CLASSES | 5175 | 4813 | 6319 | 6109 | 6083 | 28499 |
U.S. Patent and Trademark Office
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Washington, DC 20231 tel: (703) 306-2600
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