| Class | Description | Top Inventors | Number of Patent applications |
|---|
| 002 | Apparel | Mary I. Grilliot | 4044 |
| 004 | Baths, closets, sinks, and spittoons | Joseph R. Cook | 2119 |
| 005 | Beds | David W. Hornbach | 2623 |
| 007 | Compound tools | Spencer Frazer | 199 |
| 008 | Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers | Bon Kwon Koo | 1213 |
| 012 | Boot and shoe making | Susan L. Sokolowski | 94 |
| 014 | Bridges | David Johnson | 207 |
| 015 | Brushing, scrubbing, and general cleaning | Wayne Ernest Conrad | 3884 |
| 016 | Miscellaneous hardware (e.g., bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance, etc.) | Jin-Xin Wang | 1623 |
| 019 | Textiles: fiber preparation | Thomas Schmitz | 82 |
| 023 | Chemistry: physical processes | Terje Fuglerud | 27 |
| 024 | Buckles, buttons, clasps, etc. | Keiichi Keyaki | 2053 |
| 026 | Textiles: cloth finishing | Maria Francesca Marchesi | 24 |
| 027 | Undertaking | Ilija Rojdev | 132 |
| 028 | Textiles: manufacturing | Andreas Plump | 143 |
| 029 | Metal working | Akito Akimoto | 7441 |
| 030 | Cutlery | Kevin James Wain | 2123 |
| 033 | Geometrical instruments | Bing-Jun Zhang | 1382 |
| 034 | Drying and gas or vapor contact with solids | Andreas Stolze | 1346 |
| 036 | Boots, shoes, and leggings | Michael A. Aveni | 2205 |
| 037 | Excavating | Robert N. Gamble, Ii | 532 |
| 038 | Textiles: ironing or smoothing | Yong Jiang | 183 |
| 040 | Card, picture, or sign exhibiting | Tiger Qiao | 1739 |
| 042 | Firearms | Michael T. Mayberry | 1261 |
| 043 | Fishing, trapping, and vermin destroying | James H. Cink | 1346 |
| 044 | Fuel and related compositions | Paul O'Connor | 1362 |
| 047 | Plant husbandry | Donald E. Weder | 1302 |
| 048 | Gas: heating and illuminating | Earl T. Robinson | 556 |
| 049 | Movable or removable closures | Mario M. Marocco | 1734 |
| 051 | Abrasive tool making process, material, or composition | Chien-Min Sung | 387 |
| 052 | Static structures (e.g., buildings) | Darko Pervan | 7021 |
| 053 | Package making | Donald E. Weder | 2330 |
| 054 | Harness for working animal | Garrett N. Ford | 125 |
| 055 | Gas separation | Jang-Keun Oh | 1138 |
| 056 | Harvesters | Randy Lohrentz | 988 |
| 057 | Textiles: spinning, twisting, and twining | Chia-Te Chou | 220 |
| 059 | Chain, staple, and horseshoe making | Shoichiro Komiya | 104 |
| 060 | Power plants | Eugene V. Gonze | 9860 |
| 062 | Refrigeration | Michael F. Taras | 6587 |
| 063 | Jewelry | Roni Rydlewicz | 396 |
| 065 | Glass manufacturing | Andrey V. Filippov | 1140 |
| 066 | Textiles: knitting | Tiberio Lonati | 230 |
| 068 | Textiles: fluid treating apparatus | Ig Geun Kwon | 785 |
| 069 | Leather manufactures | Jens Hedegaard | 14 |
| 070 | Locks | Toshiharu Katagiri | 1501 |
| 071 | Chemistry: fertilizers | John Larry Sanders | 373 |
| 072 | Metal deforming | Sergey Fedorovich Golovashchenko | 1963 |
| 073 | Measuring and testing | Anthony D. Kurtz | 11436 |
| 074 | Machine element or mechanism | Bo Long | 4459 |
| 075 | Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures | Robert Millner | 1039 |
| 076 | Metal tools and implements, making | John H. Stevens | 85 |
| 081 | Tools | Bobby Hu | 1620 |
| 082 | Turning | Takanobu Akiyama | 242 |
| 083 | Cutting | Stephen F. Gass | 2252 |
| 084 | Music | Kenneth R. Lemons | 1845 |
| 086 | Ammunition and explosive-charge making | Ryusuke Kitamura | 81 |
| 087 | Textiles: braiding, netting, and lace making | Richard M. Dow | 49 |
| 089 | Ordnance | David L. Hunn | 1087 |
| 091 | Motors: expansible chamber type | Takashi Mori | 296 |
| 092 | Expansible chamber devices | Rainer Scharp | 555 |
| 095 | Gas separation: processes | Harry W. Deckman | 1702 |
| 096 | Gas separation: apparatus | Toshio Tanaka | 955 |
| 099 | Foods and beverages: apparatus | Jean-Luc Denisart | 1951 |
| 100 | Presses | Christopher J. Lanning | 504 |
| 101 | Printing | Georg Schneider | 1808 |
| 102 | Ammunition and explosives | Jahangir S. Rastegar | 928 |
| 104 | Railways | David W. Crawford | 392 |
| 105 | Railway rolling stock | James W. Forbes | 434 |
| 106 | Compositions: coating or plastic | Brent R. Constantz | 2104 |
| 108 | Horizontally supported planar surfaces | William P. Apps | 841 |
| 109 | Safes, bank protection, or a related device | Peter Villiger | 120 |
| 110 | Furnaces | Toshihiko Yamada | 575 |
| 111 | Planting | Michael E. Friestad | 386 |
| 112 | Sewing | Masashi Tokura | 437 |
| 114 | Ships | Bruce G. Kania | 1427 |
| 116 | Signals and indicators | Dene H. Taylor | 505 |
| 117 | Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor | Hiroshi Kishi | 683 |
| 118 | Coating apparatus | Shao-Kai Pei | 2196 |
| 119 | Animal husbandry | Karel Van Den Berg | 2720 |
| 122 | Liquid heaters and vaporizers | Jan Brückner | 515 |
| 123 | Internal-combustion engines | Ross Dykstra Pursifull | 8153 |
| 124 | Mechanical guns and projectors | Richard L. Bednar | 704 |
| 125 | Stone working | Koji Kitagawa | 212 |
| 126 | Stoves and furnaces | David Deng | 2194 |
| 127 | Sugar, starch, and carbohydrates | Sunalie N. Hillier | 140 |
| 128 | Surgery | Philip Rodney Kwok | 4759 |
| 131 | Tobacco | Michael Francis Dube | 883 |
| 132 | Toilet | Nghi Van Nguyen | 1738 |
| 134 | Cleaning and liquid contact with solids | Helmut Jerg | 3955 |
| 135 | Tent, canopy, umbrella, or cane | Oliver Joen-An Ma | 893 |
| 136 | Batteries: thermoelectric and photoelectric | Devendra K. Sadana | 7487 |
| 137 | Fluid handling | Nobukazu Ikeda | 5610 |
| 138 | Pipes and tubular conduits | Larry W. Kiest, Jr. | 1282 |
| 139 | Textiles: weaving | Francisco Speich | 216 |
| 140 | Wireworking | Takahiro Nagaoka | 115 |
| 141 | Fluent material handling, with receiver or receiver coacting means | Ludwig Clüsserath | 1500 |
| 142 | Wood turning | Stuart Batty | 6 |
| 144 | Woodworking | Tatsuya Suzuki | 433 |
| 147 | Coopering | Breck Waterman | 6 |
| 148 | Metal treatment | Tatsuhiko Eguchi | 1879 |
| 149 | Explosive and thermic compositions or charges | Graylon K. Williams | 183 |
| 150 | Purses, wallets, and protective covers | Christian J. Seegmiller | 329 |
| 152 | Resilient tires and wheels | Paul Harry Sandstrom | 2035 |
| 156 | Adhesive bonding and miscellaneous chemical manufacture | Maurizio Marchini | 7214 |
| 157 | Wheelwright machines | Lawrence J. Lawson | 114 |
| 159 | Concentrating evaporators | Bernard F. Duesel, Jr. | 69 |
| 160 | Flexible or portable closure, partition, or panel | Tzong Fu Lin | 1341 |
| 162 | Paper making and fiber liberation | Stephen J. Mccullough | 1496 |
| 163 | Needle and pin making | Tatsuya Okada | 4 |
| 164 | Metal founding | Steven J. Bullied | 971 |
| 165 | Heat exchange | Chun-Chi Chen | 5387 |
| 166 | Wells | Michael H. Johnson | 7232 |
| 168 | Farriery | Alan Dale | 45 |
| 169 | Fire extinguishers | Robert G. Dunster | 704 |
| 171 | Unearthing plants or buried objects | Kosuke Asao | 18 |
| 172 | Earth working | Michael G. Kovach | 544 |
| 173 | Tool driving or impacting | Heiko Roehm | 1088 |
| 174 | Electricity: conductors and insulators | Shou-Kuo Hsu | 7013 |
| 175 | Boring or penetrating the earth | David R. Hall | 2489 |
| 177 | Weighing scales | Shigeru Endo | 424 |
| 178 | Telegraphy | Kia Silverbrook | 379 |
| 180 | Motor vehicles | Hiroshi Gomi | 3578 |
| 181 | Acoustics | Joel D. Brewer | 985 |
| 182 | Fire escape, ladder, or scaffold | Thomas W. Parker | 981 |
| 184 | Lubrication | Zdravko Paluncic | 363 |
| 185 | Motors: spring, weight, or animal powered | Hikmet Dogan | 35 |
| 186 | Merchandising | Michael S. Notheis | 29 |
| 187 | Elevator, industrial lift truck, or stationary lift for vehicle | Takaharu Ueda | 988 |
| 188 | Brakes | Johann Baumgartner | 2052 |
| 190 | Trunks and hand-carried luggage | Dirk Santy | 283 |
| 191 | Electricity: transmission to vehicles | Gunnar Asplund | 111 |
| 192 | Clutches and power-stop control | Farzad Samie | 1640 |
| 193 | Conveyors, chutes, skids, guides, and ways | Bryan S. Datema | 91 |
| 194 | Check-actuated control mechanisms | Takao Nireki | 252 |
| 196 | Mineral oils: apparatus | Naoaki Sawai | 37 |
| 198 | Conveyors: power-driven | Matthew L. Fourney | 2125 |
| 200 | Electricity: circuit makers and breakers | Chao Chen | 2424 |
| 201 | Distillation: processes, thermolytic | Ronald Kim | 184 |
| 202 | Distillation: apparatus | Andrew A. Schnellinger | 215 |
| 203 | Distillation: processes, separatory | R. Jay Warner | 382 |
| 204 | Chemistry: electrical and wave energy | Vamsee K. Pamula | 4354 |
| 205 | Electrolysis: processes, compositions used therein, and methods of preparing the compositions | Benjamin J. Feldman | 3115 |
| 206 | Special receptacle or package | Daniel Lee Bizzell | 5683 |
| 208 | Mineral oils: processes and products | Omer Refa Koseoglu | 1674 |
| 209 | Classifying, separating, and assorting solids | Armin Zimmermann | 1004 |
| 210 | Liquid purification or separation | Robert W. Childers | 8177 |
| 211 | Supports: racks | Stephen N. Hardy | 1858 |
| 212 | Traversing hoists | Hans-Dieter Willim | 340 |
| 213 | Railway draft appliances | Jerry R. Smerecky | 77 |
| 215 | Bottles and jars | Takao Iizuka | 1204 |
| 216 | Etching a substrate: processes | Masatoshi Sakurai | 1759 |
| 217 | Wooden receptacles | Donald Obergoenner | 15 |
| 218 | High-voltage switches with arc preventing or extinguishing devices | Kenji Tsuchiya | 325 |
| 219 | Electric heating | Shou-Shan Fan | 5544 |
| 220 | Receptacles | Daniel Lee Bizzell | 5347 |
| 221 | Article dispensing | Aaron L. Bates | 967 |
| 222 | Dispensing | Heiner Ophardt | 3321 |
| 223 | Apparel apparatus | Stanley F. Gouldson | 321 |
| 224 | Package and article carriers | Chris Sautter | 1893 |
| 225 | Severing by tearing or breaking | Chi-Tsai Chang | 181 |
| 226 | Advancing material of indeterminate length | Mark Lycette | 168 |
| 227 | Elongated-member-driving apparatus | Frederick E. Shelton, Iv | 1559 |
| 228 | Metal fusion bonding | Peter A. Gruber | 1163 |
| 229 | Envelopes, wrappers, and paperboard boxes | Jean-Manuel Gomes | 978 |
| 231 | Whips and whip apparatus | Per Ib Rosendal Andersen | 4 |
| 232 | Deposit and collection receptacles | David J. Bolles | 56 |
| 234 | Selective cutting (e.g., punching) | Peter Benischke | 8 |
| 235 | Registers | Paul Lapstun | 4931 |
| 236 | Automatic temperature and humidity regulation | Cary Leen | 433 |
| 237 | Heating systems | Jason Lars Olsen | 191 |
| 238 | Railways: surface track | Winfried Bösterling | 203 |
| 239 | Fluid sprinkling, spraying, and diffusing | Huasong Zhou | 3542 |
| 241 | Solid material comminution or disintegration | Charles Sued | 1555 |
| 242 | Winding, tensioning, or guiding | Yoshiaki Maekubo | 1573 |
| 244 | Aeronautics and astronautics | Alain Porte | 4059 |
| 245 | Wire fabrics and structure | Francesco Ferraiolo | 6 |
| 246 | Railway switches and signals | Ajith Kuttannair Kumar | 180 |
| 248 | Supports | Jeffrey D. Carnevali | 5452 |
| 249 | Static molds | Artur Schwoerer | 315 |
| 250 | Radiant energy | Osamu Wakabayashi | 11558 |
| 251 | Valves and valve actuation | Dietmar Kratzer | 2510 |
| 252 | Compositions | Masayuki Saito | 5913 |
| 254 | Implements or apparatus for applying pushing or pulling force | Eric Anderson | 822 |
| 256 | Fences | Dallas James | 525 |
| 257 | Active solid-state devices (e.g., transistors, solid-state diodes) | Shunpei Yamazaki | 49338 |
| 260 | Chemistry of carbon compounds | Udo Knippenberg | 10 |
| 261 | Gas and liquid contact apparatus | Charles E. Tharp | 500 |
| 264 | Plastic and nonmetallic article shaping or treating: processes | Byung-Jin Choi | 6176 |
| 266 | Metallurgical apparatus | Paul V. Cooper | 403 |
| 267 | Spring devices | Hironori Koyama | 865 |
| 269 | Work holders | Takayuki Kawakami | 881 |
| 270 | Sheet-material associating | Katsuya Sasahara | 434 |
| 271 | Sheet feeding or delivering | Lloyd A. Williams | 2346 |
| 273 | Amusement devices: games | Attila Grauzer | 1748 |
| 277 | Seal for a joint or juncture | Glenn M. Garrison | 1778 |
| 279 | Chucks or sockets | Hans-Dieter Mack | 391 |
| 280 | Land vehicles | Osamu Fukawatase | 6675 |
| 281 | Books, strips, and leaves | David C.t. Jour | 231 |
| 283 | Printed matter | Pierre Degott | 579 |
| 285 | Pipe joints or couplings | Peter C. Williams | 2015 |
| 289 | Knots and knot tying | Cheong Choon Ng | 29 |
| 290 | Prime-mover dynamo plants | Henrik Stiesdal | 3459 |
| 291 | Track sanders | Werner Bartling | 8 |
| 292 | Closure fasteners | Thorsten Bendel | 1075 |
| 293 | Vehicle fenders | Christian Handing | 392 |
| 294 | Handling: hand and hoist-line implements | Giuseppe Maffeis | 904 |
| 295 | Railway wheels and axles | Daniel Hunter Stone | 17 |
| 296 | Land vehicles: bodies and tops | Udo Mildner | 4089 |
| 297 | Chairs and seats | Larry P. Lapointe | 4403 |
| 298 | Land vehicles: dumping | Bobby Rogers | 85 |
| 299 | Mining or in situ disintegration of hard material | David R. Hall | 400 |
| 300 | Brush, broom, and mop making | Sung-Hwan Kwon | 36 |
| 301 | Land vehicles: wheels and axles | Raphael Schlanger | 784 |
| 303 | Fluid-pressure and analogous brake systems | Kunimichi Hatano | 582 |
| 305 | Wheel substitutes for land vehicles | Mark S. Diekevers | 224 |
| 307 | Electrical transmission or interconnection systems | Marin Soljacic | 4941 |
| 310 | Electrical generator or motor structure | Alex Horng | 8039 |
| 312 | Supports: cabinet structure | Karl-Friedrich Laible | 2218 |
| 313 | Electric lamp and discharge devices | Satoshi Seo | 5483 |
| 315 | Electric lamp and discharge devices: systems | John L. Melanson | 7155 |
| 318 | Electricity: motive power systems | Steven E. Schulz | 3623 |
| 320 | Electricity: battery or capacitor charging or discharging | Shinji Ichikawa | 4510 |
| 322 | Electricity: single generator systems | Harumi Horihata | 335 |
| 323 | Electricity: power supply or regulation systems | Weihong Qiu | 3810 |
| 324 | Electricity: measuring and testing | Udo Ausserlechner | 11942 |
| 326 | Electronic digital logic circuitry | Steven Teig | 1866 |
| 327 | Miscellaneous active electrical nonlinear devices, circuits, and systems | Yantao Ma | 8379 |
| 329 | Demodulators | Daisuke Yamazaki | 72 |
| 330 | Amplifiers | Yoo Sam Na | 2871 |
| 331 | Oscillators | Taku Aoyama | 1623 |
| 332 | Modulators | Zdravko Lukic | 205 |
| 333 | Wave transmission lines and networks | Hiroyuki Nakamura | 2750 |
| 334 | Tuners | Chirn Chye Boon | 41 |
| 335 | Electricity: magnetically operated switches, magnets, and electromagnets | Larry W. Fullerton | 1230 |
| 336 | Inductor devices | Benjamin Weber | 1548 |
| 337 | Electricity: electrothermally or thermally actuated switches | Matthew R. Darr | 361 |
| 338 | Electrical resistors | Clark L. Smith | 333 |
| 340 | Communications: electrical | Lowell L. Wood, Jr. | 15563 |
| 341 | Coded data generation or conversion | Jong Kee Kwon | 3280 |
| 342 | Communications: directive radio wave systems and devices (e.g., radar, radio navigation) | Charles Abraham | 4275 |
| 343 | Communications: radio wave antennas | Perry Jarmuszewski | 5289 |
| 345 | Computer graphics processing and selective visual display systems | Katsuhide Uchino | 33932 |
| 346 | Recorders | Klaus Hug | 20 |
| 347 | Incremental printing of symbolic information | Kia Silverbrook | 10574 |
| 348 | Television | Kia Silverbrook | 27125 |
| 349 | Liquid crystal cells, elements and systems | Jae-Jin Lyu | 8943 |
| 351 | Optics: eye examining, vision testing and correcting | Ronald D. Blum | 2450 |
| 352 | Optics: motion pictures | Dean K. Goodhill | 54 |
| 353 | Optics: image projectors | Koji Hirata | 2215 |
| 355 | Photocopying | Yuichi Shibazaki | 2784 |
| 356 | Optics: measuring and testing | Yuta Urano | 8074 |
| 358 | Facsimile and static presentation processing | Kia Silverbrook | 11462 |
| 359 | Optical: systems and elements | Niall R. Lynam | 12810 |
| 360 | Dynamic magnetic information storage or retrieval | Koji Shimazawa | 4284 |
| 361 | Electricity: electrical systems and devices | Li-Ping Chen | 16535 |
| 362 | Illumination | Shao-Han Chang | 12869 |
| 363 | Electric power conversion systems | Ta-Yung Yang | 3411 |
| 365 | Static information storage and retrieval | Frankie F. Roohparvar | 12300 |
| 366 | Agitating | Eugene J. Kozlowski | 1133 |
| 367 | Communications, electrical: acoustic wave systems and devices | Peter M. Eick | 1969 |
| 368 | Horology: time measuring systems or devices | Saburo Manaka | 1121 |
| 369 | Dynamic information storage or retrieval | Yoshiaki Komma | 4744 |
| 370 | Multiplex communications | Juan Montojo | 40510 |
| 372 | Coherent light generators | Masaki Ueno | 3126 |
| 373 | Industrial electric heating furnaces | Thomas Matschullat | 103 |
| 374 | Thermal measuring and testing | John A. Lane | 1232 |
| 375 | Pulse or digital communications | Takeshi Chujoh | 18752 |
| 376 | Induced nuclear reactions: processes, systems, and elements | Roderick A. Hyde | 1117 |
| 377 | Electrical pulse counters, pulse dividers, or shift registers: circuits and systems | Youichi Tobita | 302 |
| 378 | X-ray or gamma ray systems or devices | Yasunori Ohta | 3816 |
| 379 | Telephonic communications | Peeyush Jaiswal | 4188 |
| 380 | Cryptography | Mathieu Ciet | 3462 |
| 381 | Electrical audio signal processing systems and devices | Hiroshi Akino | 7826 |
| 382 | Image analysis | Geoffrey B. Rhoads | 18446 |
| 383 | Flexible bags | Robert R. Turvey | 1117 |
| 384 | Bearings | Peter Niebling | 2073 |
| 385 | Optical waveguides | Trevor D. Smith | 5642 |
| 386 | Television signal processing for dynamic recording or reproducing | Hideo Ando | 3642 |
| 388 | Electricity: motor control systems | Hua Zou | 83 |
| 392 | Electric resistance heating devices | Joseph M. Ranish | 572 |
| 396 | Photography | Koji Shibuno | 1937 |
| 398 | Optical communications | Takeshi Hoshida | 5298 |
| 399 | Electrophotography | Shougo Sato | 10078 |
| 400 | Typewriting machines | Koshiro Yamaguchi | 920 |
| 401 | Coating implements with material supply | Jean-Louis Gueret | 1074 |
| 402 | Binder device releasably engaging aperture or notch of sheet | Chun Yuen To | 155 |
| 403 | Joints and connections | Yu-Tao Chen | 1683 |
| 404 | Road structure, process, or apparatus | Martin Buschmann | 895 |
| 405 | Hydraulic and earth engineering | Keith K. Millheim | 2129 |
| 406 | Conveyors: fluid current | Göran Sundholm | 235 |
| 407 | Cutters, for shaping | Gil Hecht | 685 |
| 408 | Cutting by use of rotating axially moving tool | Takuji Nomura | 849 |
| 409 | Gear cutting, milling, or planing | Yoshinori Tatsuda | 477 |
| 410 | Freight accommodation on freight carrier | John D. Anderson | 357 |
| 411 | Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener | Jiri Babej | 1345 |
| 412 | Bookbinding: process and apparatus | Nobuyoshi Suzuki | 243 |
| 413 | Sheet metal container making | Peter Gysi | 53 |
| 414 | Material or article handling | Peter Van Der Meulen | 3309 |
| 415 | Rotary kinetic fluid motors or pumps | Gabriel L. Suciu | 4176 |
| 416 | Fluid reaction surfaces (i.e., impellers) | George Liang | 3850 |
| 417 | Pumps | Ken Suitou | 3708 |
| 418 | Rotary expansible chamber devices | Masanori Masuda | 1117 |
| 419 | Powder metallurgy processes | Hideaki Kawata | 438 |
| 420 | Alloys or metallic compositions | David R. Whitcomb | 1120 |
| 422 | Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing | Rayford G. Anthony | 5096 |
| 423 | Chemistry of inorganic compounds | Hartwig Rauleder | 4522 |
| 424 | Drug, bio-affecting and body treating compositions | David M. Goldenberg | 47026 |
| 425 | Plastic article or earthenware shaping or treating: apparatus | Xiao-Ping Wu | 2103 |
| 426 | Food or edible material: processes, compositions, and products | William H. Eby | 8458 |
| 427 | Coating processes | Shunpei Yamazaki | 8868 |
| 428 | Stock material or miscellaneous articles | Cheng-Shi Chen | 25502 |
| 429 | Chemistry: electrical current producing apparatus, product, and process | Norio Takami | 15325 |
| 430 | Radiation imagery chemistry: process, composition, or product thereof | Jin Wu | 6748 |
| 431 | Combustion | Patrick Benedict Melton | 1080 |
| 432 | Heating | Takanori Saito | 446 |
| 433 | Dentistry | Eric Kuo | 3173 |
| 434 | Education and demonstration | Robert M. Lofthus | 2986 |
| 435 | Chemistry: molecular biology and microbiology | Anthony P. Burgard | 28827 |
| 436 | Chemistry: analytical and immunological testing | Tetsuo Nagano | 3489 |
| 438 | Semiconductor device manufacturing: process | Shunpei Yamazaki | 19594 |
| 439 | Electrical connectors | Jerry Wu | 10157 |
| 440 | Marine propulsion | Daisuke Nakamura | 682 |
| 441 | Buoys, rafts, and aquatic devices | Tzong In Yeh | 442 |
| 442 | Fabric (woven, knitted, or nonwoven textile or cloth, etc.) | Martyn Douglas Wakeman | 1591 |
| 445 | Electric lamp or space discharge component or device manufacturing | Shou-Shan Fan | 594 |
| 446 | Amusement devices: toys | Michael Nuttall | 1408 |
| 449 | Bee culture | Felix Leopold Wackers | 26 |
| 450 | Foundation garments | Zhen Qiang Liu | 352 |
| 451 | Abrading | Boguslaw A. Swedek | 2538 |
| 452 | Butchering | Adrianus Josephes Van Den Nieuwelaar | 328 |
| 453 | Coin handling | Gregory F. String | 76 |
| 454 | Ventilation | Zhen-Xing Ye | 1317 |
| 455 | Telecommunications | Ahmadreza (reza) Rofougaran | 31096 |
| 460 | Crop threshing or separating | Jonathan E. Ricketts | 186 |
| 462 | Books, strips, and leaves for manifolding | Jeffrey William Ross | 3 |
| 463 | Amusement devices: games | Kazumasa Yoshizawa | 8423 |
| 464 | Rotary shafts, gudgeons, housings, and flexible couplings for rotary shafts | Seung Tark Oh | 701 |
| 470 | Threaded, headed fastener, or washer making: process and apparatus | Donald E. Bergstrom | 71 |
| 472 | Amusement devices | David W. Crawford | 326 |
| 473 | Games using tangible projectile | Michael J. Sullivan | 4837 |
| 474 | Endless belt power transmission systems or components | Yuji Kurematsu | 1118 |
| 475 | Planetary gear transmission systems or components | James M. Hart | 2041 |
| 476 | Friction gear transmission systems or components | Mitsugi Yamashita | 116 |
| 477 | Interrelated power delivery controls, including engine control | Atsushi Tabata | 1202 |
| 482 | Exercise devices | Leao Wang | 2876 |
| 483 | Tool changing | Daniel Allen Norton | 95 |
| 492 | Roll or roller | Junichi Takano | 149 |
| 493 | Manufacturing container or tube from paper; or other manufacturing from a sheet or web | Robert Tegel | 796 |
| 494 | Imperforate bowl: centrifugal separators | Victor D. Dolecek | 311 |
| 501 | Compositions: ceramic | Akio Koike | 1043 |
| 502 | Catalyst, solid sorbent, or support therefor: product or process of making | Alexander E. Kuperman | 2112 |
| 503 | Record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor | Gerhard Stork | 162 |
| 504 | Plant protecting and regulating compositions | Christopher Hugh Rosinger | 2061 |
| 505 | Superconductor technology: apparatus, material, process | Rainer Soika | 526 |
| 506 | Combinatorial chemistry technology: method, library, apparatus | Mehdi Azimi | 5358 |
| 507 | Earth boring, well treating, and oil field chemistry | James B. Crews | 898 |
| 508 | Solid anti-friction devices, materials therefor, lubricant or separant compositions for moving solid surfaces, and miscellaneous mineral oil compositions | Patrick E. Mosier | 1310 |
| 510 | Cleaning compositions for solid surfaces, auxiliary compositions therefor, or processes of preparing the compositions | Johan Smets | 2019 |
| 512 | Perfume compositions | Anthony T. Levorse, Jr. | 101 |
| 514 | Drug, bio-affecting and body treating compositions | Anthony W. Czarnik | 41522 |
| 516 | Colloid systems and wetting agents; subcombinations thereof; processes of | Anubhav Saxena | 130 |
| 518 | Chemistry: fischer-tropsch processes; or purification or recovery of products thereof | Charles L. Kibby | 450 |
| 521 | Synthetic resins or natural rubbers -- part of the class 520 series | Klaus Hahn | 1609 |
| 522 | Synthetic resins or natural rubbers -- part of the class 520 series | Reinhold Schwalm | 713 |
| 523 | Synthetic resins or natural rubbers -- part of the class 520 series | Peter Bissinger | 1777 |
| 524 | Synthetic resins or natural rubbers -- part of the class 520 series | Bernd Bruchmann | 7097 |
| 525 | Synthetic resins or natural rubbers -- part of the class 520 series | Phillip D. Hustad | 3036 |
| 526 | Synthetic resins or natural rubbers -- part of the class 520 series | Max P. Mcdaniel | 2462 |
| 527 | Synthetic resins or natural rubbers -- part of the class 520 series | Deborah Jean Back | 58 |
| 528 | Synthetic resins or natural rubbers -- part of the class 520 series | Joachim C. Ritter | 1800 |
| 530 | Chemistry: natural resins or derivatives; peptides or proteins; lignins or reaction products thereof | Kevin I. Segall | 2774 |
| 534 | Organic compounds -- part of the class 532-570 series | Keiichi Tateishi | 156 |
| 536 | Organic compounds -- part of the class 532-570 series | William Marshall | 1733 |
| 540 | Organic compounds -- part of the class 532-570 series | Jonathan S. Lindsey | 675 |
| 544 | Organic compounds -- part of the class 532-570 series | Johann-Peter Melder | 1493 |
| 546 | Organic compounds -- part of the class 532-570 series | Gary L. Cantrell | 1582 |
| 548 | Organic compounds -- part of the class 532-570 series | Gottfried Sedelmeier | 1356 |
| 549 | Organic compounds -- part of the class 532-570 series | Frank Rosowski | 1352 |
| 552 | Organic compounds -- part of the class 532-570 series | Robert M. Moriarty | 128 |
| 554 | Organic compounds -- part of the class 532-570 series | Aniket Kale | 453 |
| 556 | Organic compounds -- part of the class 532-570 series | Qing Yang | 609 |
| 558 | Organic compounds -- part of the class 532-570 series | Robert Baumann | 444 |
| 560 | Organic compounds -- part of the class 532-570 series | Eckhard Stroefer | 874 |
| 562 | Organic compounds -- part of the class 532-570 series | Mark O. Scates | 886 |
| 564 | Organic compounds -- part of the class 532-570 series | Johann-Peter Melder | 853 |
| 568 | Organic compounds -- part of the class 532-570 series | Victor J. Johnston | 1506 |
| 570 | Organic compounds -- part of the class 532-570 series | Hsueh Sung Tung | 414 |
| 585 | Chemistry of hydrocarbon compounds | Deng-Yang Jan | 1939 |
| 588 | Hazardous or toxic waste destruction or containment | Stephen J. Agace | 294 |
| 600 | Surgery | Lowell L. Wood, Jr. | 22992 |
| 601 | Surgery: kinesitherapy | Peter G. Barthe | 1761 |
| 602 | Surgery: splint, brace, or bandage | Arni Thor Ingimundarson | 1408 |
| 604 | Surgery | Lowell L. Wood, Jr. | 14586 |
| 606 | Surgery | Lutz Biedermann | 17665 |
| 607 | Surgery: light, thermal, and electrical application | Imad Libbus | 6488 |
| 623 | Prosthesis (i.e., artificial body members), parts thereof, or aids and accessories therefor | Jan Weber | 8865 |
| 700 | Data processing: generic control systems or specific applications | Kyung Shik Roh | 10748 |
| 701 | Data processing: vehicles, navigation, and relative location | Anthony H. Heap | 15792 |
| 702 | Data processing: measuring, calibrating, or testing | Lowell L. Wood, Jr. | 11040 |
| 703 | Data processing: structural design, modeling, simulation, and emulation | Jiun-Der Yu | 4581 |
| 704 | Data processing: speech signal processing, linguistics, language translation, and audio compression/decompression | Yang-Won Jung | 6176 |
| 705 | Data processing: financial, business practice, management, or cost/price determination | Royce A. Levien | 24225 |
| 706 | Data processing: artificial intelligence | Lowell L. Wood, Jr. | 3768 |
| 707 | Data processing: database and file management or data structures | Richard D. Dettinger | 9429 |
| 708 | Electrical computers: arithmetic processing and calculating | Eric M. Schwarz | 1295 |
| 709 | Electrical computers and digital processing systems: multicomputer data transferring | Jeyhan Karaoguz | 24545 |
| 710 | Electrical computers and digital data processing systems: input/output | John R. Flanagan | 5684 |
| 711 | Electrical computers and digital processing systems: memory | Yoshiaki Eguchi | 11582 |
| 712 | Electrical computers and digital processing systems: processing architectures and instruction processing (e.g., processors) | G. Glenn Henry | 2924 |
| 713 | Electrical computers and digital processing systems: support | Wael William Diab | 11939 |
| 714 | Error detection/correction and fault detection/recovery | Lee D. Whetsel | 9694 |
| 715 | Data processing: presentation processing of document, operator interface processing, and screen saver display processing | Sanjiv Sirpal | 16326 |
| 716 | Data processing: design and analysis of circuit or semiconductor mask | Viresh Paruthi | 1788 |
| 717 | Data processing: software development, installation, and management | Henricus Johannes Maria Meijer | 6095 |
| 718 | Electrical computers and digital processing systems: virtual machine task or process management or task management/control | International Business Machines Corporation | 4380 |
| 719 | Electrical computers and digital processing systems: interprogram communication or interprocess communication (ipc) | International Business Machines Corporation | 2042 |
| 720 | Dynamic optical information storage or retrieval | Jen-Chen Wu | 798 |
| 725 | Interactive video distribution systems | Michael D. Ellis | 7625 |
| 726 | Information security | Mark A. Malamud | 11333 |
| 800 | Multicellular living organisms and unmodified parts thereof and related processes | William H. Eby | 6594 |
| 850 | Scanning-probe techniques or apparatus; applications of scanning-probe techniques, e.g., scanning probe microscopy [spm] | Roger Proksch | 340 |
| 903 | Hybrid electric vehicles (hevs) | Joseph Akwo Tabe | 1 |
| PLT | Plants | Monica Maria Adelheid Sanders | 159 |
