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U.S. PATENT AND TRADEMARK OFFICE
Electronic Information Products Division
Patent Technology Monitoring Team (PTMT)

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

Count of 2004 - 2008 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 either by year of patent grant or by year of patent application.
Class Class Title 2004 2005 2006 2007 2008 Total
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 2983 2611 3263 2899 2679 14435
438 Semiconductor Device Manufacturing: Process 2298 2014 2068 2011 1818 10209
370 Multiplex Communications 1703 1607 2298 1841 2452 9901
435 Chemistry: Molecular Biology and Microbiology 1741 1525 1920 1758 1581 8525
257 Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) 1819 1688 1699 1536 1472 8214
709 Multicomputer Data Transferring (Electrical Computers and Digital Processing Systems) 1193 1149 1778 1667 1940 7727
455 Telecommunications 1117 1095 1959 1721 1479 7371
707 DP: Database and File Management or Data Structures (Data Processing) 1113 957 1435 1270 1444 6219
340 Communications: Electrical 934 916 1429 1103 1228 5610
128 Surgery (includes Class 600) 1349 1037 1204 1035 908 5533
532 Organic Compounds (includes Classes 532-570) 1044 939 1292 1028 1146 5449
375 Pulse or Digital Communications 873 811 1243 1086 1152 5165
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 1241 1012 1098 940 805 5096
714 Error Detection/Correction and Fault Detection/Recovery 823 733 1089 1115 1170 4930
711 Memory (Electrical Computers and Digital Processing Systems) 936 893 1125 916 1054 4924
385 Optical Waveguides 1103 1031 1000 924 859 4917
382 Image Analysis 917 658 1086 1032 1073 4766
345 Computer Graphics Processing and Selective Visual Display Systems 940 846 1197 930 831 4744
702 DP: Measuring, Calibrating, or Testing (Data Processing) 955 917 1028 907 850 4657
324 Electricity: Measuring and Testing 978 910 1029 897 823 4637
428 Stock Material or Miscellaneous Articles 1322 1039 824 798 634 4617
073 Measuring and Testing 844 876 970 894 929 4513
365 Static Information Storage and Retrieval 852 845 881 902 884 4364
250 Radiant Energy 849 716 1022 819 948 4354
713 Support (Electrical Computers and Digital Processing Systems) 572 652 1067 979 1083 4353
439 Electrical Connectors 855 774 888 794 899 4210
705 DP: Financial, Business Practice, Management, or Cost/Price Determination (Data Processing) 257 617 1007 932 1297 4110
361 Electricity: Electrical Systems and Devices 878 698 766 865 833 4040
359 Optical: Systems and Elements 818 792 860 716 710 3896
606 Surgery (instruments) 857 724 827 780 598 3786
356 Optics: Measuring and Testing 651 577 786 796 871 3681
379 Telephonic Communications 888 650 918 674 537 3667
360 Dynamic Magnetic Information Storage or Retrieval 784 587 790 623 540 3324
710 Input/Output (Electrical Computers and Digital Processing Systems) 862 623 741 523 567 3316
715 DP: Presentation Processing of Document, Operator Interface Processing, and Screen Saver Display Processing (Data Processing) 459 546 760 720 759 3244
029 Metal Working 679 613 749 609 500 3150
280 Land Vehicles 615 645 606 628 595 3089
604 Surgery (Medicators and Receptors) 814 617 590 485 478 2984
210 Liquid Purification or Separation 642 551 546 599 541 2879
123 Internal-Combustion Engines 577 566 615 560 539 2857
700 DP: Generic Control Systems or Specific Applications (Data Processing) 632 516 666 496 481 2791
235 Registers (e.g., cash registers, calculators, devices for counting movements of devices, etc.) 452 339 610 614 675 2690
362 Illumination 466 485 612 626 484 2673
327 Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems 589 522 619 521 405 2656
716 DP: Design and Analysis of Circuit or Semiconductor Mask (Data Processing) 446 432 699 512 559 2648
701 DP: Vehicles, Navigation, and Relative Location (Data Processing) 602 551 494 495 487 2629
166 Wells (shafts or deep borings in the earth, e.g., for oil and gas) 488 385 614 557 559 2603
800 Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes 400 360 507 614 523 2404
607 Surgery: Light, Thermal, and Electrical Application 441 413 582 587 379 2402
530 Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof 300 293 473 616 594 2276
348 Television 436 376 555 439 446 2252
717 DP: Software Development, Installation, and Management (Data Processing) 295 356 554 510 498 2213
623 Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor 541 403 484 421 351 2200
473 Games Using Tangible Projectile 424 428 494 433 376 2155
060 Power Plants 459 446 516 373 322 2116
219 Electric Heating 528 437 473 406 261 2105
052 Static Structures (e.g., Buildings) 554 474 408 330 303 2069
296 Land Vehicles: Bodies and Tops 418 395 454 426 365 2058
430 Radiation Imagery Chemistry: Process, Composition, or Product Thereof 514 358 440 355 321 1988
704 DP: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression (Data Processing) 291 236 504 457 458 1946
062 Refrigeration 433 328 432 440 291 1924
347 Incremental Printing of Symbolic Information 517 402 340 316 309 1884
156 Adhesive Bonding and Miscellaneous Chemical Manufacture 507 389 360 327 246 1829
341 Coded Data Generation or Conversion 352 330 388 376 379 1825
358 Facsimile and Static Presentation Processing 276 293 450 396 405 1820
174 Electricity: Conductors and Insulators 356 383 372 358 335 1804
326 Electronic Digital Logic Circuitry 340 341 334 387 348 1750
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 518 356 329 259 249 1711
137 Fluid Handling 360 392 391 289 267 1699
422 Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing 358 295 290 359 353 1655
427 Coating Processes 449 362 260 290 286 1647
343 Communications: Radio Wave Antennas 286 390 372 288 297 1633
451 Abrading 367 410 434 259 149 1619
206 Special Receptacle or Package 319 354 312 265 355 1605
726 Information Security 158 171 376 430 465 1600
703 DP: Structural Design, Modeling, Simulation, and Emulation (Data Processing) 181 263 448 349 342 1583
342 Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) 361 262 327 299 329 1578
310 Electrical Generator or Motor Structure 421 351 306 225 269 1572
429 Chemistry: Electrical Current Producing Apparatus, Product, and Process 378 308 326 288 249 1549
330 Amplifiers 324 223 329 327 270 1473
297 Chairs and Seats 342 245 320 261 284 1452
248 Supports (e.g., for holding articles, etc.) 299 253 320 302 236 1410
005 Beds 300 289 291 210 280 1370
372 Coherent Light Generators 400 274 278 201 208 1361
712 Processing Architectures and Instruction Processing, e.g., Processors (Electrical Computers and Digital Processing Systems) 256 258 262 242 291 1309
378 X-Ray or Gamma Ray Systems or Devices 228 222 282 268 268 1268
244 Aeronautics and Astronautics 288 260 264 244 196 1252
239 Fluid Sprinkling, Spraying, and Diffusing 320 274 303 211 142 1250
482 Exercise Devices 228 188 330 246 250 1242
463 Amusement Devices: Games 274 237 199 218 307 1235
436 Chemistry: Analytical and Immunological Testing 271 237 208 259 254 1229
398 Optical Communications 179 168 292 300 274 1213
033 Geometrical Instruments 224 257 234 254 226 1195
002 Apparel 295 244 294 185 156 1174
015 Brushing, Scrubbing, and General Cleaning 232 201 215 260 232 1140
180 Motor Vehicles 203 228 224 222 224 1101
222 Dispensing (apparatus and process) 268 249 253 187 139 1096
119 Animal Husbandry 215 225 247 219 183 1089
426 Food or Edible Material: Processes, Compositions, and Products 316 185 230 188 137 1056
318 Electricity: Motive Power Systems 213 183 247 202 192 1037
381 Electrical Audio Signal Processing Systems and Devices 200 142 268 231 187 1028
114 Ships 184 233 238 206 165 1026
315 Electric Lamp and Discharge Devices: Systems 229 204 220 191 179 1023
204 Chemistry: Electrical and Wave Energy 262 228 177 184 155 1006
719 Interprogram Communication or Interprocess Communication (Ipc) (Electrical Computers and Digital Processing Systems) 195 197 232 135 245 1004
423 Chemistry of Inorganic Compounds 200 166 237 194 201 998
333 Wave Transmission Lines and Networks 222 206 193 173 157 951
252 Compositions 218 145 208 173 196 940
405 Hydraulic and Earth Engineering 196 183 236 145 166 926
510 Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions 242 165 190 155 167 919
053 Package Making 212 207 169 126 176 890
134 Cleaning and Liquid Contact with Solids 229 182 161 159 147 878
725 Interactive Video Distribution Systems 157 119 243 197 154 870
351 Optics: Eye Examining, Vision Testing and Correcting 152 141 172 184 220 869
399 Electrophotography 183 139 184 206 157 869
273 Amusement Devices: Games 169 149 177 188 184 867
165 Heat Exchange 190 187 248 141 96 862
331 Oscillators 174 143 180 187 171 855
414 Material or Article Handling 232 163 164 144 121 824
380 Cryptography 78 139 219 220 166 822
175 Boring or Penetrating the Earth 160 133 178 161 187 819
198 Conveyors: Power-Driven 164 167 172 171 145 819
323 Electricity: Power Supply or Regulation Systems 148 137 191 162 178 816
425 Plastic Article or Earthenware Shaping or Treating: Apparatus 177 116 195 193 134 815
502 Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making 180 175 166 155 135 811
708 Arithmetic Processing and Calculating (Electrical Computers) 171 145 202 122 171 811
040 Card, Picture, or Sign Exhibiting 194 149 148 150 167 808
106 Compositions: Coating or Plastic 223 124 159 154 141 801
706 DP: Artificial Intelligence (Data Processing) 109 142 163 150 237 801
141 Fluent Material Handling, with Receiver or Receiver Coacting Means 205 187 169 151 79 791
313 Electric Lamp and Discharge Devices 235 158 160 132 106 791
433 Dentistry 163 154 205 158 110 790
718 Virtual Machine Task or Process Management or Task Management/Control (Electrical Computers and Digital Processing Systems) 147 142 190 144 164 787
415 Rotary Kinetic Fluid Motors or Pumps 149 180 194 136 123 782
084 Music 136 104 148 185 198 771
211 Supports: Racks 187 175 174 146 86 768
220 Receptacles 174 133 184 147 128 766
004 Baths, Closets, Sinks, and Spittoons 216 168 151 125 105 765
043 Fishing, Trapping, and Vermin Destroying 196 172 148 123 118 757
081 Tools 133 145 195 178 97 748
475 Planetary Gear Transmission Systems or Components 162 96 154 179 135 726
072 Metal Deforming 125 121 195 147 117 705
434 Education and Demonstration 185 167 137 123 85 697
251 Valves and Valve Actuation 140 186 188 104 74 692
118 Coating Apparatus 180 144 136 113 109 682
036 Boots, Shoes, and Leggings 117 133 155 122 147 674
200 Electricity: Circuit Makers and Breakers 169 135 149 102 119 674
417 Pumps 177 115 159 116 100 667
242 Winding, Tensioning, or Guiding 159 115 134 129 126 663
416 Fluid Reaction Surfaces (i.e., Impellers) 118 115 137 128 136 634
285 Pipe Joints or Couplings 138 130 145 80 137 630
095 Gas Separation: Processes 133 105 126 103 148 615
363 Electric Power Conversion Systems 127 127 128 113 120 615
205 Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions 179 128 114 102 89 612
083 Cutting 168 111 160 100 66 605
446 Amusement Devices: Toys 191 121 111 96 84 603
307 Electrical Transmission or Interconnection Systems 135 70 139 117 141 602
030 Cutlery 142 124 140 100 85 591
216 Etching a Substrate: Processes 131 114 125 108 104 582
585 Chemistry of Hydrocarbon Compounds 107 86 103 133 153 582
353 Optics: Image Projectors 107 100 131 119 123 580
404 Road Structure, Process, or Apparatus 113 87 133 105 107 545
602 Surgery: Splint, Brace, or Bandage 115 124 137 90 78 544
024 Buckles, Buttons, Clasps, Etc. 109 88 123 115 108 543
290 Prime-Mover Dynamo Plants 89 79 122 119 125 534
056 Harvesters 116 141 113 75 87 532
224 Package and Article Carriers 187 115 89 70 70 531
042 Firearms 120 88 103 103 106 520
367 Communications, Electrical: Acoustic Wave Systems and Devices 101 90 97 116 115 519
074 Machine Element or Mechanism 122 99 103 120 73 517
228 Metal Fusion Bonding 118 127 88 71 101 505
070 Locks 111 108 105 83 97 504
369 Dynamic Information Storage or Retrieval 117 103 104 89 86 499
101 Printing 172 86 121 56 51 486
335 Electricity: Magnetically Operated Switches, Magnets, and Electromagnets 112 124 104 78 68 486
366 Agitating (e.g., of articles and materials) 103 91 82 106 104 486
188 Brakes 98 112 121 89 65 485
320 Electricity: Battery or Capacitor Charging or Discharging 106 109 72 82 106 475
162 Paper Making and Fiber Liberation 123 76 97 94 77 467
401 Coating Implements with Material Supply 107 90 94 96 78 465
241 Solid Material Comminution or Disintegration 71 81 102 121 89 464
102 Ammunition and Explosives 88 93 98 75 100 454
182 Fire Escape, Ladder, or Scaffold 115 108 111 78 42 454
254 Implements or Apparatus for Applying Pushing or Pulling Force 79 86 107 87 85 444
055 Gas Separation 88 75 61 98 121 443
292 Closure Fasteners 79 83 101 93 81 437
160 Flexible or Portable Closure, Partition, or Panel 109 95 99 76 48 427
386 Television Signal Processing for Dynamic Recording or Reproducing 74 66 75 117 95 427
099 Foods and Beverages: Apparatus 117 75 93 56 83 424
312 Supports: Cabinet Structure 123 105 86 56 54 424
208 Mineral Oils: Processes and Products 90 66 80 80 102 418
294 Handling: Hand and Hoist-Line Implements 57 66 100 103 85 411
192 Clutches and Power-Stop Control 97 73 94 78 67 409
277 Seal for a Joint or Juncture 115 98 85 48 61 407
442 Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, Etc.) 121 72 61 70 80 404
016 Miscellaneous Hardware 97 87 108 66 45 403
440 Marine Propulsion 83 77 95 77 70 402
221 Article Dispensing 89 71 107 74 56 397
355 Photocopying 78 95 89 74 60 396
411 Expanded, Threaded, Driven, Headed, Tool-Deformed, or Locked-Threaded Fastener 95 84 92 65 60 396
164 Metal Founding 75 85 91 92 50 393
209 Classifying, Separating, and Assorting Solids 91 79 70 75 78 393
148 Metal Treatment 112 84 74 64 57 391
349 Liquid Crystal Cells, Elements and Systems 96 97 76 59 62 390
400 Typewriting Machines 109 103 77 59 39 387
034 Drying and Gas or Vapor Contact with Solids 104 91 86 40 60 381
108 Horizontally Supported Planar Surfaces 113 83 81 49 50 376
117 Single-Crystal, Oriented-Crystal, and Epitaxy Growth Processes; Non-Coating Apparatus Therefor 84 76 72 76 67 375
124 Mechanical Guns and Projectors 120 68 62 68 57 375
374 Thermal Measuring and Testing 64 77 92 49 87 369
336 Inductor Devices 63 89 91 78 44 365
227 Elongated-Member-Driving Apparatus 71 52 82 72 78 355
396 Photography 122 55 58 49 71 355
601 Surgery: Kinesitherapy 68 55 75 79 77 354
431 Combustion 102 100 55 50 36 343
271 Sheet Feeding or Delivering 78 67 63 57 70 335
047 Plant Husbandry 92 79 76 53 32 332
049 Movable or Removable Closures 98 74 67 43 49 331
403 Joints and Connections 99 79 56 41 56 331
410 Freight Accommodation On Freight Carrier 75 66 67 61 62 331
089 Ordnance 78 56 54 54 78 320
493 Manufacturing Container or Tube From Paper; or Other Manufacturing From a Sheet or Web 81 67 58 45 67 318
096 Gas Separation: Apparatus 79 59 54 60 63 315
126 Stoves and Furnaces 107 94 48 30 35 314
441 Buoys, Rafts, and Aquatic Devices 58 56 77 64 51 306
454 Ventilation 95 70 66 37 37 305
181 Acoustics 64 65 37 63 75 304
215 Bottles and Jars 57 65 71 58 47 298
135 Tent, Canopy, Umbrella, or Cane 74 47 53 66 51 291
368 Horology: Time Measuring Systems or Devices 60 44 67 52 66 289
065 Glass Manufacturing 113 46 43 45 40 287
229 Envelopes, Wrappers, and Paperboard Boxes 46 71 51 63 56 287
138 Pipes and Tubular Conduits 61 66 54 52 44 277
132 Toilet 70 40 48 76 42 276
075 Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures 83 50 42 42 58 275
261 Gas and Liquid Contact Apparatus 69 34 68 52 52 275
008 Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers 84 44 62 40 34 264
384 Bearings 60 56 58 39 51 264
392 Electric Resistance Heating Devices 52 64 66 58 24 264
507 Earth Boring, Well Treating, and Oil Field Chemistry 61 37 57 56 47 258
037 Excavating 71 57 59 41 26 254
383 Flexible Bags 47 68 54 44 34 247
172 Earth Working 63 64 64 30 25 246
508 Solid Anti-Friction Devices, Materials Therefor, Lubricant or Separant Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions 74 35 34 41 53 237
269 Work Holders 58 59 53 41 24 235
452 Butchering 30 34 62 50 55 231
501 Compositions: Ceramic 59 47 56 37 32 231
408 Cutting by Use of Rotating Axially Moving Tool 35 38 66 53 32 224
152 Resilient Tires and Wheels 47 44 55 39 37 222
100 Presses 45 40 47 40 47 219
301 Land Vehicles: Wheels and Axles 48 45 54 32 40 219
092 Expansible Chamber Devices 40 41 43 48 40 212
303 Fluid-Pressure and Analogous Brake Systems 43 42 46 34 46 211
144 Woodworking 31 28 57 39 51 206
116 Signals and Indicators 51 44 34 38 38 205
256 Fences 39 48 50 29 35 201
464 Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts 48 40 55 23 33 199
477 Interrelated Power Delivery Controls, Including Engine Control 29 38 41 50 41 199
111 Planting 47 31 42 35 39 194
267 Spring Devices 44 36 38 34 40 192
136 Batteries: Thermoelectric and Photoelectric 47 25 35 46 32 185
418 Rotary Expansible Chamber Devices 56 29 36 36 27 184
445 Electric Lamp or Space Discharge Component or Device Manufacturing 50 42 48 22 22 184
177 Weighing Scales 48 31 34 45 24 182
044 Fuel and Related Compositions 61 30 16 37 35 179
236 Automatic Temperature and Humidity Regulation 38 32 36 44 29 179
474 Endless Belt Power Transmission Systems or Components 38 43 46 30 21 178
169 Fire Extinguishers 28 35 40 30 39 172
223 Apparel Apparatus 38 30 26 43 32 169
232 Deposit and Collection Receptacles 22 23 36 46 37 164
293 Vehicle Fenders 38 37 31 31 26 163
409 Gear Cutting, Milling, or Planing 27 35 36 35 30 163
173 Tool Driving or Impacting 33 30 45 26 26 160
506 Combinatorial Chemistry Technology: Method, Library, Apparatus 80 57 0 0 19 156
472 Amusement Devices 35 37 28 25 26 151
122 Liquid Heaters and Vaporizers 34 33 28 25 30 150
249 Static Molds 45 24 37 30 14 150
105 Railway Rolling Stock 33 34 29 24 27 147
112 Sewing 35 27 32 22 30 146
131 Tobacco 46 28 20 27 21 142
187 Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle 25 21 33 40 23 142
110 Furnaces 27 40 33 18 20 138
063 Jewelry 32 17 31 29 26 135
376 Induced Nuclear Reactions: Processes, Systems, and Elements 49 34 23 11 18 135
091 Motors: Expansible Chamber Type 33 32 30 24 13 132
283 Printed Matter 44 28 23 18 19 132
450 Foundation Garments 24 28 30 28 22 132
504 Plant Protecting and Regulating Compositions 39 34 27 18 11 129
048 Gas: Heating and Illuminating 19 15 24 33 36 127
518 Chemistry: Fischer-Tropsch Processes; or Purification or Recovery of Products Thereof 32 22 34 20 17 125
299 Mining or In Situ Disintegration of Hard Material 22 19 23 17 40 121
322 Electricity: Single Generator Systems 16 18 31 24 32 121
338 Electrical Resistors 20 16 42 29 14 121
014 Bridges 26 22 27 25 18 118
051 Abrasive Tool Making Process, Material, or Composition 38 20 14 28 16 116
104 Railways 25 23 20 21 26 115
407 Cutters, for Shaping 29 18 29 19 20 115
007 Compound Hand Tools 26 30 28 20 9 113
125 Stone Working 23 22 34 16 16 111
337 Electricity: Electrothermally or Thermally Actuated Switches 39 23 8 13 24 107
460 Crop Threshing or Separating 26 21 16 20 20 103
027 Undertaking 14 12 10 37 29 102
149 Explosive and Thermic Compositions or Charges 35 39 19 2 5 100
266 Metallurgical Apparatus 25 21 18 19 17 100
054 Harness for Working Animal 24 9 20 24 20 97
720 Dynamic Optical Information Storage or Retrieval 22 13 25 11 26 97
419 Powder Metallurgy Processes 25 18 13 16 23 95
184 Lubrication 18 19 25 16 12 90
066 Textiles: Knitting 20 21 24 11 12 88
190 Trunks and Hand-Carried Luggage 14 18 27 14 15 88
516 Colloid Systems and Wetting Agents, Subcombinations Thereof, Processes of Making, Stabilizing, Breaking, or Inhibiting 21 12 20 20 14 87
057 Textiles: Spinning, Twisting, and Twining 20 12 16 20 15 83
406 Conveyors: Fluid Current 22 6 23 19 13 83
494 Imperforate Bowl: Centrifugal Separators 23 15 21 10 14 83
082 Turning (e.g., for metal working) 17 15 18 15 17 82
432 Heating 21 19 15 12 15 82
139 Textiles: Weaving 20 20 20 12 8 80
225 Severing by Tearing or Breaking 28 15 17 13 6 79
194 Check-Actuated Control Mechanisms 20 25 16 11 6 78
028 Textiles: Manufacturing 17 8 23 18 9 75
503 Record Receiver Having Plural Interactive Leaves or a Colorless Color Former, Method of Use, or Developer Therefor 11 15 20 18 10 74
279 Chucks or Sockets 18 19 9 11 16 73
246 Railway Switches and Signals 16 9 17 12 15 69
377 Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems 15 23 15 6 9 68
402 Binder Device Releasably Engaging Aperture or Notch of Sheet 23 16 12 9 8 68
068 Textiles: Fluid Treating Apparatus 10 10 10 17 20 67
588 Hazardous or Toxic Waste Destruction or Containment 10 12 16 15 14 67
298 Land Vehicles: Dumping 18 16 11 9 11 65
352 Optics: Motion Pictures 20 8 18 9 8 63
140 Wireworking 8 5 20 14 13 60
212 Traversing Hoists 10 6 17 10 17 60
505 Superconductor Technology: Apparatus, Material, Process 16 16 11 9 7 59
203 Distillation: Processes, Separatory 9 16 11 9 13 58
281 Books, Strips, and Leaves 19 14 9 4 11 57
202 Distillation: Apparatus 12 8 14 10 12 56
476 Friction Gear Transmission Systems or Components 6 8 17 14 11 56
150 Purses, Wallets, and Protective Covers 12 7 12 14 10 55
193 Conveyors, Chutes, Skids, Guides, and Ways 14 9 15 7 10 55
059 Chain, Staple, and Horseshoe Making 10 16 12 8 8 54
373 Industrial Electric Heating Furnaces 15 6 14 9 9 53
038 Textiles: Ironing or Smoothing 13 9 12 12 6 52
218 High-Voltage Switches with Arc Preventing or Extinguishing Devices 17 9 13 8 4 51
270 Sheet-Material Associating 18 5 10 6 11 50
420 Alloys or Metallic Compositions 18 11 5 3 13 50
305 Wheel Substitutes for Land Vehicles 9 10 7 10 13 49
238 Railways: Surface Track 13 6 12 6 10 47
071 Chemistry: Fertilizers 17 13 7 5 4 46
086 Ammunition and Explosive-Charge Making 5 9 14 7 9 44
237 Heating Systems 16 11 10 3 3 43
226 Advancing Material of Indeterminate Length 8 9 9 8 6 40
512 Perfume Compositions 4 5 12 10 8 39
157 Wheelwright Machines 4 7 7 9 10 37
332 Modulators 8 10 9 6 3 36
492 Roll or Roller 10 11 6 5 4 36
213 Railway Draft Appliances 10 4 7 8 6 35
470 Threaded, Headed Fastener, or Washer Making: Process and Apparatus 8 5 11 3 7 34
412 Bookbinding: Process and Apparatus 10 8 6 3 5 32
076 Metal Tools and Implements, Making 6 4 3 12 3 28
001 ** Classification Undetermined ** 0 6 6 9 5 26
012 Boot and Shoe Making 5 2 7 5 7 26
329 Demodulators 9 2 5 2 6 24
453 Coin Handling 12 3 4 3 2 24
186 Merchandising 9 3 3 5 3 23
109 Safes, Bank Protection, or a Related Device 5 9 2 2 4 22
388 Electricity: Motor Control Systems 6 3 5 4 4 22
191 Electricity: Transmission To Vehicles 7 4 6 1 2 20
168 Farriery 4 4 3 3 5 19
413 Sheet Metal Container Making 9 1 3 3 2 18
019 Textiles: Fiber Preparation 1 0 6 4 6 17
127 Sugar, Starch, and Carbohydrates 4 2 3 6 2 17
483 Tool Changing 2 5 1 3 6 17
026 Textiles: Cloth Finishing 5 2 3 4 2 16
159 Concentrating Evaporators 1 9 1 2 2 15
289 Knots and Knot Tying 4 2 3 2 4 15
178 Telegraphy 8 1 2 2 1 14
023 Chemistry: Physical Processes 0 3 2 4 2 11
449 Bee Culture (propagating, raising, caring for bees) 3 2 4 1 1 11
087 Textiles: Braiding, Netting, and Lace Making 2 1 1 3 3 10
201 Distillation: Processes, Thermolytic 2 0 5 0 3 10
346 Recorders 0 1 4 3 2 10
171 Unearthing Plants or Buried Objects 1 0 5 1 1 8
291 Track Sanders 1 3 1 1 0 6
217 Wooden Receptacles 0 2 1 0 2 5
295 Railway Wheels and Axles 2 1 0 1 1 5
300 Brush, Broom, and Mop Making 1 3 1 0 0 5
334 Tuners 0 1 2 1 1 5
185 Motors: Spring, Weight, or Animal Powered 2 1 1 0 0 4
234 Selective Cutting (e.g., Punching) 1 0 2 0 1 4
196 Mineral Oils: Apparatus 0 0 1 0 2 3
069 Leather Manufactures 0 1 0 1 0 2
231 Whips and Whip Apparatus 0 0 0 0 2 2
462 Books, Strips, and Leaves for Manifolding 0 0 0 1 1 2
079 Button Making 0 1 0 0 0 1
245 Wire Fabrics and Structure 0 1 0 0 0 1
260 Chemistry of Carbon Compounds 1 0 0 0 0 1
278 Land Vehicles: Animal Draft Appliances 0 0 0 1 0 1
ALL ALL CLASSES 84270 74637 89823 79526 77501 405757


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