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U.S. PATENT AND TRADEMARK OFFICE
Patent Technology Monitoring Team (PTMT)

Patenting By Geographic Region (State and Country),
Breakout By Technology Class

Count of 2011 - 2015 Utility Patent Grants
As Distributed By Calendar Year of Grant

- Explanation of Data -

Rank Ordered Listing of Technology Classes Receiving 1 or More Utility Patents During the Period
Originating From

UNITED STATES, ALL REGIONS

( patent origin is determined by the residence of the first-named inventor )
( technology class is determined by the primary classification assigned to a patent- see 'Explanation of Data' )
( some classes have been combined together under a single class identifier )

The following table displays technology classes and counts of utility patents classified in them; patents are distributed by year of patent grant.
Class Class Title 2011 2012 2013 2014 2015 Total
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 4043 5099 6048 6690 7024 28904
370 Multiplex Communications 4082 4230 4468 5297 5144 23221
709 Multicomputer Data Transferring (Electrical Computers and Digital Processing Systems) 3324 3581 3548 4636 4270 19359
705 DP: Financial, Business Practice, Management, or Cost/Price Determination (Data Processing) 3413 4100 4940 4044 1731 18228
455 Telecommunications 2689 3615 3987 4035 3898 18224
707 DP: Database and File Management or Data Structures (Data Processing) 2967 3404 3483 3921 3838 17613
257 Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) 2026 1952 2383 2720 3245 12326
606 Surgery (instruments) 1788 2241 2602 2672 2899 12202
128 Surgery (includes Class 600) 1891 2218 2658 2805 2570 12142
435 Chemistry: Molecular Biology and Microbiology 2131 2128 2227 2396 2164 11046
438 Semiconductor Device Manufacturing: Process 2151 1905 2060 2439 1885 10440
382 Image Analysis 1563 2016 2076 2185 2052 9892
726 Information Security 1016 1422 1948 2557 2816 9759
345 Computer Graphics Processing and Selective Visual Display Systems 1168 1458 1804 2168 2467 9065
375 Pulse or Digital Communications 1349 1794 1813 1954 2030 8940
701 DP: Vehicles, Navigation, and Relative Location (Data Processing) 964 1419 1832 2084 2429 8728
532 Organic Compounds (includes Classes 532-570) 1450 1605 1744 1783 1485 8067
340 Communications: Electrical 1352 1599 1687 1693 1684 8015
713 Support (Electrical Computers and Digital Processing Systems) 1250 1443 1608 1909 1764 7974
604 Surgery (Medicators and Receptors) 1285 1559 1766 1632 1549 7791
715 DP: Presentation Processing of Document, Operator Interface Processing, and Screen Saver Display Processing (Data Processing) 1040 1270 1465 1878 1925 7578
711 Memory (Electrical Computers and Digital Processing Systems) 1184 1407 1396 1679 1883 7549
714 Error Detection/Correction and Fault Detection/Recovery 1301 1307 1473 1484 1596 7161
348 Television 684 1083 1197 1589 2055 6608
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 1268 1106 1330 1389 1268 6361
607 Surgery: Light, Thermal, and Electrical Application 939 1107 1326 1411 1029 5812
717 DP: Software Development, Installation, and Management (Data Processing) 713 966 1270 1369 1284 5602
623 Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor 887 996 1116 1227 1230 5456
428 Stock Material or Miscellaneous Articles 1110 1028 1061 988 1111 5298
463 Amusement Devices: Games 643 1092 1211 1256 1050 5252
800 Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes 755 1037 1136 1178 1099 5205
365 Static Information Storage and Retrieval 990 920 994 1119 1084 5107
725 Interactive Video Distribution Systems 527 630 955 1512 1357 4981
361 Electricity: Electrical Systems and Devices 913 881 967 1054 1148 4963
379 Telephonic Communications 833 994 1106 1123 794 4850
250 Radiant Energy 764 894 1064 1120 976 4818
702 DP: Measuring, Calibrating, or Testing (Data Processing) 980 1040 1021 913 778 4732
700 DP: Generic Control Systems or Specific Applications (Data Processing) 728 805 980 1078 1094 4685
052 Static Structures (e.g., Buildings) 636 824 1010 1122 1008 4600
073 Measuring and Testing 840 876 916 903 954 4489
060 Power Plants 636 795 960 1011 1006 4408
166 Wells (shafts or deep borings in the earth, e.g., for oil and gas) 631 784 852 1008 1099 4374
029 Metal Working 733 819 784 894 829 4059
362 Illumination 628 698 849 878 932 3985
235 Registers (e.g., cash registers, calculators, devices for counting movements of devices, etc.) 760 760 864 780 758 3922
324 Electricity: Measuring and Testing 774 727 744 842 779 3866
280 Land Vehicles 678 656 755 825 799 3713
704 DP: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression (Data Processing) 573 667 799 810 754 3603
439 Electrical Connectors 850 648 716 636 722 3572
356 Optics: Measuring and Testing 712 650 706 675 684 3427
710 Input/Output (Electrical Computers and Digital Data Processing Systems) 696 691 624 739 652 3402
473 Games Using Tangible Projectile 590 650 650 704 672 3266
716 Computer-Aided Design and Analysis of Circuits and Semiconductor Masks 661 683 770 750 399 3263
422 Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing 618 694 644 681 565 3202
360 Dynamic Magnetic Information Storage or Retrieval 570 569 494 863 691 3187
359 Optical: Systems and Elements 641 615 583 709 588 3136
381 Electrical Audio Signal Processing Systems and Devices 397 723 553 591 871 3135
210 Liquid Purification or Separation 601 685 599 632 569 3086
706 DP: Artificial Intelligence (Data Processing) 535 544 636 694 636 3045
718 Virtual Machine Task or Process Management or Task Management/Control (Electrical Computers and Digital Processing Systems) 296 548 654 672 824 2994
429 Chemistry: Electrical Current Producing Apparatus, Product, and Process 476 526 575 670 730 2977
385 Optical Waveguides 442 494 623 691 688 2938
427 Coating Processes 493 593 534 564 577 2761
358 Facsimile and Static Presentation Processing 467 582 642 623 443 2757
123 Internal-Combustion Engines 434 482 548 580 583 2627
327 Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems 424 431 561 649 552 2617
703 DP: Structural Design, Modeling, Simulation, and Emulation (Data Processing) 481 528 458 546 468 2481
156 Adhesive Bonding and Miscellaneous Chemical Manufacture 459 472 558 522 456 2467
347 Incremental Printing of Symbolic Information 353 466 554 616 444 2433
315 Electric Lamp and Discharge Devices: Systems 262 373 477 542 676 2330
398 Optical Communications 382 392 450 504 595 2323
248 Supports (e.g., for holding articles, etc.) 408 453 416 434 572 2283
137 Fluid Handling 272 394 451 485 675 2277
244 Aeronautics and Astronautics 400 419 431 421 534 2205
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 472 429 412 488 385 2186
219 Electric Heating 256 403 499 519 420 2097
220 Receptacles 320 338 445 488 502 2093
206 Special Receptacle or Package 376 381 391 451 476 2075
530 Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof 496 399 435 420 300 2050
296 Land Vehicles: Bodies and Tops 317 385 419 421 410 1952
436 Chemistry: Analytical and Immunological Testing 430 410 395 373 287 1895
482 Exercise Devices 476 288 263 383 429 1839
062 Refrigeration 340 277 378 367 437 1799
415 Rotary Kinetic Fluid Motors or Pumps 221 432 328 393 403 1777
342 Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) 440 418 294 286 334 1772
297 Chairs and Seats 312 296 328 371 464 1771
380 Cryptography 291 335 376 408 323 1733
015 Brushing, Scrubbing, and General Cleaning 296 291 404 366 362 1719
005 Beds 267 301 353 400 371 1692
174 Electricity: Conductors and Insulators 283 306 314 375 408 1686
423 Chemistry of Inorganic Compounds 305 300 370 372 334 1681
343 Communications: Radio Wave Antennas 291 306 341 375 324 1637
307 Electrical Transmission or Interconnection Systems 303 303 305 339 369 1619
002 Apparel 309 314 318 317 351 1609
719 Interprogram Communication or Interprocess Communication (Ipc) (Electrical Computers and Digital Processing Systems) 269 330 349 346 301 1595
310 Electrical Generator or Motor Structure 328 314 341 313 285 1581
320 Electricity: Battery or Capacitor Charging or Discharging 235 301 296 301 446 1579
180 Motor Vehicles 306 314 348 323 278 1569
222 Dispensing (apparatus and process) 235 296 354 354 316 1555
252 Compositions 280 272 317 323 352 1544
426 Food or Edible Material: Processes, Compositions, and Products 255 294 322 283 381 1535
430 Radiation Imagery Chemistry: Process, Composition, or Product Thereof 333 298 298 304 227 1460
204 Chemistry: Electrical and Wave Energy 227 289 309 310 313 1448
119 Animal Husbandry 272 292 291 310 279 1444
416 Fluid Reaction Surfaces (i.e., Impellers) 277 312 259 294 285 1427
175 Boring or Penetrating the Earth 271 259 262 289 306 1387
341 Coded Data Generation or Conversion 277 226 294 294 287 1378
712 Processing Architectures and Instruction Processing, e.g., Processors (Electrical Computers and Digital Processing Systems) 352 243 260 223 277 1355
042 Firearms 207 222 266 332 322 1349
434 Education and Demonstration 142 230 325 347 238 1282
239 Fluid Sprinkling, Spraying, and Diffusing 210 195 229 287 350 1271
323 Electricity: Power Supply or Regulation Systems 244 241 252 267 254 1258
378 X-Ray or Gamma Ray Systems or Devices 245 221 204 238 315 1223
351 Optics: Eye Examining, Vision Testing and Correcting 233 195 220 291 281 1220
084 Music 230 229 208 272 273 1212
134 Cleaning and Liquid Contact with Solids 211 227 248 262 262 1210
095 Gas Separation: Processes 217 244 286 247 182 1176
318 Electricity: Motive Power Systems 218 223 242 262 229 1174
585 Chemistry of Hydrocarbon Compounds 196 210 256 248 253 1163
417 Pumps 164 275 245 243 227 1154
475 Planetary Gear Transmission Systems or Components 223 220 263 238 201 1145
136 Batteries: Thermoelectric and Photoelectric 149 180 170 272 369 1140
372 Coherent Light Generators 214 195 196 234 280 1119
330 Amplifiers 229 190 209 209 249 1086
326 Electronic Digital Logic Circuitry 282 170 252 156 202 1062
414 Material or Article Handling 170 169 171 210 337 1057
386 Motion Video Signal Processing for Recording or Reproducing 87 177 199 302 281 1046
290 Prime-Mover Dynamo Plants 186 194 226 249 188 1043
363 Electric Power Conversion Systems 182 175 197 207 272 1033
036 Boots, Shoes, and Leggings 168 196 195 233 225 1017
211 Supports: Racks 193 176 185 221 242 1017
405 Hydraulic and Earth Engineering 156 169 225 258 209 1017
227 Elongated-Member-Driving Apparatus 181 203 237 207 187 1015
004 Baths, Closets, Sinks, and Spittoons 184 239 165 183 234 1005
089 Ordnance 176 205 207 214 197 999
502 Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making 180 187 213 241 177 998
708 Arithmetic Processing and Calculating (Electrical Computers) 169 164 285 165 192 975
074 Machine Element or Mechanism 117 183 183 186 285 954
224 Package and Article Carriers 107 145 167 229 306 954
399 Electrophotography 214 214 182 184 146 940
040 Card, Picture, or Sign Exhibiting 194 185 153 228 177 937
510 Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions 203 200 171 195 144 913
451 Abrading 151 169 196 179 199 894
033 Geometrical Instruments 215 173 168 180 157 893
433 Dentistry 147 158 201 182 196 884
118 Coating Apparatus 164 187 185 199 125 860
198 Conveyors: Power-Driven 148 140 172 195 198 853
216 Etching a Substrate: Processes 106 162 209 209 154 840
333 Wave Transmission Lines and Networks 163 132 135 162 247 839
367 Communications, Electrical: Acoustic Wave Systems and Devices 128 155 165 167 221 836
205 Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions 130 167 180 148 208 833
425 Plastic Article or Earthenware Shaping or Treating: Apparatus 170 164 161 193 145 833
369 Dynamic Information Storage or Retrieval 138 145 212 147 190 832
114 Ships 138 145 141 182 217 823
602 Surgery: Splint, Brace, or Bandage 186 188 150 182 116 822
106 Compositions: Coating or Plastic 156 179 169 150 164 818
043 Fishing, Trapping, and Vermin Destroying 137 133 156 184 187 797
313 Electric Lamp and Discharge Devices 171 189 175 154 105 794
208 Mineral Oils: Processes and Products 147 131 175 187 152 792
273 Amusement Devices: Games 154 147 201 179 87 768
102 Ammunition and Explosives 139 148 156 133 156 732
024 Buckles, Buttons, Clasps, Etc. 111 132 170 151 164 728
251 Valves and Valve Actuation 97 140 141 151 186 715
294 Handling: Hand and Hoist-Line Implements 115 114 172 162 149 712
446 Amusement Devices: Toys 146 109 128 155 171 709
162 Paper Making and Fiber Liberation 143 155 143 153 106 700
053 Package Making 160 154 143 102 135 694
055 Gas Separation 173 152 150 118 101 694
099 Foods and Beverages: Apparatus 103 115 143 183 141 685
241 Solid Material Comminution or Disintegration 169 130 118 143 117 677
126 Stoves and Furnaces 101 109 149 153 163 675
030 Cutlery 129 113 135 170 126 673
083 Cutting 121 139 138 139 135 672
141 Fluent Material Handling, with Receiver or Receiver Coacting Means 105 127 158 139 135 664
331 Oscillators 152 139 106 139 116 652
081 Tools 116 91 142 157 127 633
165 Heat Exchange 105 116 117 96 196 630
285 Pipe Joints or Couplings 117 115 114 144 133 623
047 Plant Husbandry 106 126 132 122 135 621
049 Movable or Removable Closures 63 101 134 151 170 619
182 Fire Escape, Ladder, or Scaffold 83 117 135 141 127 603
124 Mechanical Guns and Projectors 102 89 141 141 128 601
312 Supports: Cabinet Structure 71 105 102 127 195 600
404 Road Structure, Process, or Apparatus 117 113 125 127 118 600
188 Brakes 80 101 136 120 155 592
072 Metal Deforming 115 116 128 107 125 591
181 Acoustics 123 106 126 114 117 586
374 Thermal Measuring and Testing 79 151 110 118 111 569
349 Liquid Crystal Cells, Elements and Systems 96 111 114 95 150 566
507 Earth Boring, Well Treating, and Oil Field Chemistry 145 104 106 108 102 565
096 Gas Separation: Apparatus 97 125 117 117 108 564
411 Expanded, Threaded, Driven, Headed, Tool-Deformed, or Locked-Threaded Fastener 89 87 131 122 130 559
132 Toilet 75 98 116 118 149 556
200 Electricity: Circuit Makers and Breakers 100 106 103 115 132 556
396 Photography 109 122 116 133 72 552
401 Coating Implements with Material Supply 64 129 119 130 105 547
366 Agitating (e.g., of articles and materials) 101 134 107 113 91 546
160 Flexible or Portable Closure, Partition, or Panel 76 92 106 124 142 540
601 Surgery: Kinesitherapy 77 93 110 119 137 536
192 Clutches and Power-Stop Control 82 83 96 120 154 535
108 Horizontally Supported Planar Surfaces 86 124 114 108 102 534
506 Combinatorial Chemistry Technology: Method, Library, Apparatus 44 26 44 112 308 534
228 Metal Fusion Bonding 114 117 112 93 90 526
016 Miscellaneous Hardware (e.g., Bushing, Carpet Fastener, Caster, Door Closer, Panel Hanger, Attachable or Adjunct Handle, Hinge, Window Sash Balance, Etc.) 84 88 120 120 109 521
056 Harvesters 122 116 79 92 109 518
209 Classifying, Separating, and Assorting Solids 91 82 92 130 122 517
292 Closure Fasteners 72 83 126 132 104 517
070 Locks 91 96 102 113 104 506
353 Optics: Image Projectors 119 115 98 95 76 503
508 Solid Anti-Friction Devices, Materials Therefor, Lubricant or Separant Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions 114 86 96 102 105 503
277 Seal for a Joint or Juncture 78 87 91 105 130 491
477 Interrelated Power Delivery Controls, Including Engine Control 71 99 101 113 95 479
215 Bottles and Jars 79 86 94 120 91 470
254 Implements or Apparatus for Applying Pushing or Pulling Force 77 87 119 93 91 467
148 Metal Treatment 76 96 114 104 74 464
229 Envelopes, Wrappers, and Paperboard Boxes 82 61 84 117 120 464
335 Electricity: Magnetically Operated Switches, Magnets, and Electromagnets 70 115 119 93 65 462
242 Winding, Tensioning, or Guiding 95 67 83 99 117 461
135 Tent, Canopy, Umbrella, or Cane 100 75 88 91 106 460
044 Fuel and Related Compositions 69 71 101 102 109 452
138 Pipes and Tubular Conduits 75 62 82 99 130 448
504 Plant Protecting and Regulating Compositions 33 77 98 104 135 447
269 Work Holders 64 88 111 102 76 441
034 Drying and Gas or Vapor Contact with Solids 71 81 89 100 92 433
384 Bearings 42 51 99 112 122 426
065 Glass Manufacturing 82 75 74 103 91 425
403 Joints and Connections 54 73 61 94 137 419
131 Tobacco 60 48 89 86 120 403
376 Induced Nuclear Reactions: Processes, Systems, and Elements 45 54 87 114 99 399
336 Inductor Devices 103 69 68 83 75 398
164 Metal Founding 81 87 63 87 78 396
442 Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, Etc.) 130 83 69 51 58 391
101 Printing 51 52 77 98 105 383
048 Gas: Heating and Illuminating 60 81 87 83 71 382
271 Sheet Feeding or Delivering 103 96 82 53 34 368
261 Gas and Liquid Contact Apparatus 65 83 68 78 71 365
075 Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures 66 71 67 86 70 360
410 Freight Accommodation On Freight Carrier 71 78 75 66 63 353
431 Combustion 54 54 70 75 88 341
221 Article Dispensing 72 51 66 71 79 339
454 Ventilation 45 43 75 76 94 333
037 Excavating 68 57 52 63 86 326
152 Resilient Tires and Wheels 47 58 56 75 75 311
008 Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers 68 60 67 64 49 308
172 Earth Working 52 53 59 74 60 298
441 Buoys, Rafts, and Aquatic Devices 40 43 51 75 84 293
169 Fire Extinguishers 29 43 54 87 78 291
383 Flexible Bags 41 51 62 61 72 287
472 Amusement Devices 54 52 53 72 56 287
117 Single-Crystal, Oriented-Crystal, and Epitaxy Growth Processes; Non-Coating Apparatus Therefor 47 64 69 66 40 286
440 Marine Propulsion 54 46 50 62 74 286
267 Spring Devices 41 54 59 64 60 278
392 Electric Resistance Heating Devices 54 64 59 62 36 275
355 Photocopying 54 39 54 67 57 271
418 Rotary Expansible Chamber Devices 54 59 37 52 67 269
408 Cutting by Use of Rotating Axially Moving Tool 50 42 52 71 49 264
051 Abrasive Tool Making Process, Material, or Composition 39 32 39 71 72 253
501 Compositions: Ceramic 58 51 41 51 48 249
236 Automatic Temperature and Humidity Regulation 52 37 46 50 47 232
474 Endless Belt Power Transmission Systems or Components 49 44 48 32 57 230
104 Railways 36 51 56 38 46 227
452 Butchering 52 37 46 55 33 223
149 Explosive and Thermic Compositions or Charges 56 58 54 34 20 222
493 Manufacturing Container or Tube From Paper; or Other Manufacturing From a Sheet or Web 45 48 52 39 36 220
464 Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts 44 53 49 37 36 219
105 Railway Rolling Stock 45 38 51 45 37 216
173 Tool Driving or Impacting 33 45 45 38 52 213
368 Horology: Time Measuring Systems or Devices 60 31 49 47 26 213
187 Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle 40 47 39 45 40 211
299 Mining or In Situ Disintegration of Hard Material 39 33 47 56 36 211
450 Foundation Garments 35 51 44 50 27 207
111 Planting 35 32 41 46 49 203
100 Presses 41 34 40 43 40 198
116 Signals and Indicators 30 37 28 42 60 197
400 Typewriting Machines 37 34 31 50 37 189
014 Bridges 40 32 41 45 18 176
071 Chemistry: Fertilizers 26 28 27 41 54 176
184 Lubrication 28 25 47 38 36 174
266 Metallurgical Apparatus 34 38 41 28 29 170
301 Land Vehicles: Wheels and Axles 38 18 37 33 43 169
518 Chemistry: Fischer-Tropsch Processes; or Purification or Recovery of Products Thereof 26 37 35 28 41 167
144 Woodworking 80 36 24 9 17 166
256 Fences 29 27 37 34 37 164
092 Expansible Chamber Devices 27 19 37 27 48 158
303 Fluid-Pressure and Analogous Brake Systems 37 38 26 26 26 153
850 Scanning-Probe Techniques or Apparatus; Applications of Scanning-Probe Techniques, e.g., Scanning Probe Microscopy [Spm] 15 29 33 38 34 149
223 Apparel Apparatus 26 29 23 30 36 144
505 Superconductor Technology: Apparatus, Material, Process 16 16 45 39 27 143
122 Liquid Heaters and Vaporizers 25 23 28 37 27 140
203 Distillation: Processes, Separatory 16 30 34 26 33 139
409 Gear Cutting, Milling, or Planing 20 17 22 31 43 133
112 Sewing 22 39 20 24 27 132
246 Railway Switches and Signals 16 23 19 30 44 132
068 Textiles: Fluid Treating Apparatus 25 17 23 33 32 130
063 Jewelry 17 22 25 29 34 127
027 Undertaking 27 22 24 24 29 126
419 Powder Metallurgy Processes 20 26 20 30 30 126
110 Furnaces 16 27 21 32 29 125
283 Printed Matter 32 17 31 26 17 123
445 Electric Lamp or Space Discharge Component or Device Manufacturing 25 29 23 26 18 121
588 Hazardous or Toxic Waste Destruction or Containment 33 26 18 17 27 121
293 Vehicle Fenders 18 26 20 22 33 119
177 Weighing Scales 19 19 19 36 24 117
322 Electricity: Single Generator Systems 31 28 17 21 20 117
460 Crop Threshing or Separating 24 20 15 22 30 111
082 Turning (e.g., for metal working) 27 30 19 12 22 110
194 Check-Actuated Control Mechanisms 15 22 27 31 15 110
494 Imperforate Bowl: Centrifugal Separators 23 28 18 14 26 109
407 Cutters, for Shaping 26 15 22 23 22 108
190 Trunks and Hand-Carried Luggage 22 18 27 18 19 104
007 Compound Hand Tools 17 13 21 19 33 103
338 Electrical Resistors 16 33 28 14 11 102
406 Conveyors: Fluid Current 18 13 22 23 26 102
279 Chucks or Sockets 17 17 15 31 21 101
150 Purses, Wallets, and Protective Covers 12 17 16 30 25 100
249 Static Molds 22 18 18 20 17 95
420 Alloys or Metallic Compositions 10 20 13 19 31 93
270 Sheet-Material Associating 29 21 28 9 4 91
516 Colloid Systems and Wetting Agents, Subcombinations Thereof, Processes of Making, Stabilizing, Breaking, or Inhibiting 27 21 17 15 11 91
202 Distillation: Apparatus 16 16 29 15 14 90
125 Stone Working 14 16 18 23 18 89
305 Wheel Substitutes for Land Vehicles 19 10 16 28 16 89
066 Textiles: Knitting 24 11 19 11 20 85
218 High-Voltage Switches with Arc Preventing or Extinguishing Devices 7 13 16 23 20 79
337 Electricity: Electrothermally or Thermally Actuated Switches 24 18 9 10 14 75
503 Record Receiver Having Plural Interactive Leaves or a Colorless Color Former, Method of Use, or Developer Therefor 8 15 19 22 9 73
091 Motors: Expansible Chamber Type 13 13 12 14 20 72
238 Railways: Surface Track 13 12 12 16 19 72
298 Land Vehicles: Dumping 17 13 13 13 12 68
212 Traversing Hoists 14 4 10 20 17 65
225 Severing by Tearing or Breaking 9 13 8 21 14 65
127 Sugar, Starch, and Carbohydrates 5 8 13 15 23 64
232 Deposit and Collection Receptacles 15 15 11 13 10 64
237 Heating Systems 7 10 18 12 14 61
012 Boot and Shoe Making 12 12 10 11 15 60
332 Modulators 19 10 9 14 8 60
157 Wheelwright Machines 8 12 9 16 14 59
086 Ammunition and Explosive-Charge Making 6 10 8 17 17 58
201 Distillation: Processes, Thermolytic 8 12 8 7 23 58
213 Railway Draft Appliances 8 7 16 16 11 58
432 Heating 14 7 9 8 20 58
057 Textiles: Spinning, Twisting, and Twining 13 14 12 12 6 57
193 Conveyors, Chutes, Skids, Guides, and Ways 8 1 11 14 20 54
059 Chain, Staple, and Horseshoe Making 11 6 11 13 11 52
720 Dynamic Optical Information Storage or Retrieval 20 13 9 7 3 52
038 Textiles: Ironing or Smoothing 6 12 18 7 8 51
377 Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems 11 9 9 8 14 51
139 Textiles: Weaving 12 13 5 11 8 49
087 Textiles: Braiding, Netting, and Lace Making 4 7 15 18 2 46
054 Harness for Working Animal 6 19 9 5 6 45
076 Metal Tools and Implements, Making 10 11 8 6 8 43
281 Books, Strips, and Leaves 9 6 5 14 9 43
191 Electricity: Transmission To Vehicles 9 4 11 10 7 41
140 Wireworking 7 6 7 5 15 40
352 Optics: Motion Pictures 5 11 9 8 7 40
289 Knots and Knot Tying 6 7 10 5 10 38
028 Textiles: Manufacturing 8 5 5 7 12 37
109 Safes, Bank Protection, or a Related Device 2 8 7 4 15 36
476 Friction Gear Transmission Systems or Components 11 8 4 11 2 36
402 Binder Device Releasably Engaging Aperture or Notch of Sheet 6 4 14 5 6 35
512 Perfume Compositions 4 4 11 12 4 35
023 Chemistry: Physical Processes 7 6 12 3 5 33
159 Concentrating Evaporators 8 4 3 11 7 33
373 Industrial Electric Heating Furnaces 3 5 8 10 4 30
492 Roll or Roller 8 6 8 5 3 30
178 Telegraphy 0 8 8 6 7 29
412 Bookbinding: Process and Apparatus 4 8 5 3 6 26
019 Textiles: Fiber Preparation 3 7 6 4 4 24
196 Mineral Oils: Apparatus 6 3 6 9 0 24
226 Advancing Material of Indeterminate Length 2 3 1 3 11 20
453 Coin Handling 1 4 5 2 8 20
449 Bee Culture (propagating, raising, caring for bees) 5 2 3 6 3 19
186 Merchandising 5 2 4 2 3 16
026 Textiles: Cloth Finishing 2 9 1 2 0 14
329 Demodulators 4 3 1 3 3 14
300 Brush, Broom, and Mop Making 1 1 4 5 2 13
168 Farriery 0 1 4 4 3 12
413 Sheet Metal Container Making 3 2 1 1 5 12
483 Tool Changing 2 2 4 2 2 12
470 Threaded, Headed Fastener, or Washer Making: Process and Apparatus 5 1 3 2 0 11
185 Motors: Spring, Weight, or Animal Powered 0 2 3 1 2 8
171 Unearthing Plants or Buried Objects 1 0 1 3 1 6
069 Leather Manufactures 1 1 1 2 0 5
217 Wooden Receptacles 1 1 1 0 2 5
234 Selective Cutting (e.g., Punching) 0 1 2 1 1 5
462 Books, Strips, and Leaves for Manifolding 0 1 2 1 1 5
291 Track Sanders 1 0 2 0 1 4
295 Railway Wheels and Axles 0 1 0 1 2 4
260 Chemistry of Carbon Compounds 1 0 0 0 2 3
388 Electricity: Motor Control Systems 1 0 1 1 0 3
142 Wood Turning 0 0 0 2 0 2
258 Railway Mail Delivery 0 1 0 0 1 2
334 Tuners 0 1 0 0 1 2
346 Recorders 0 1 0 1 0 2
314 Electric Lamp and Discharge Devices: Consumable Electrodes 0 0 0 1 0 1
ALL ALL CLASSES 108622 121026 133593 144621 140969 648831


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