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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

CALIFORNIA

( 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
370 Multiplex Communications 609 582 888 726 939 3744
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 612 538 722 655 637 3164
438 Semiconductor Device Manufacturing: Process 753 664 615 582 471 3085
709 Multicomputer Data Transferring (Electrical Computers and Digital Processing Systems) 403 394 607 610 680 2694
257 Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) 648 587 536 448 415 2634
435 Chemistry: Molecular Biology and Microbiology 518 481 585 532 484 2600
455 Telecommunications 347 329 586 511 477 2250
707 DP: Database and File Management or Data Structures (Data Processing) 400 351 516 439 460 2166
365 Static Information Storage and Retrieval 407 441 412 420 417 2097
375 Pulse or Digital Communications 332 297 535 463 446 2073
345 Computer Graphics Processing and Selective Visual Display Systems 402 347 496 388 333 1966
360 Dynamic Magnetic Information Storage or Retrieval 352 346 469 422 351 1940
711 Memory (Electrical Computers and Digital Processing Systems) 371 355 442 373 384 1925
714 Error Detection/Correction and Fault Detection/Recovery 296 268 417 401 399 1781
385 Optical Waveguides 335 360 374 267 242 1578
128 Surgery (includes Class 600) 372 282 311 303 304 1572
713 Support (Electrical Computers and Digital Processing Systems) 180 183 336 315 352 1366
716 DP: Design and Analysis of Circuit or Semiconductor Mask (Data Processing) 236 254 358 251 260 1359
606 Surgery (instruments) 331 268 279 255 194 1327
382 Image Analysis 212 174 300 276 347 1309
250 Radiant Energy 263 227 288 255 275 1308
356 Optics: Measuring and Testing 220 216 299 251 292 1278
359 Optical: Systems and Elements 268 252 277 236 231 1264
710 Input/Output (Electrical Computers and Digital Processing Systems) 285 215 268 187 207 1162
327 Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems 247 222 279 207 170 1125
324 Electricity: Measuring and Testing 224 220 268 203 205 1120
361 Electricity: Electrical Systems and Devices 217 195 209 235 218 1074
532 Organic Compounds (includes Classes 532-570) 187 182 228 191 273 1061
702 DP: Measuring, Calibrating, or Testing (Data Processing) 207 216 253 201 170 1047
340 Communications: Electrical 132 170 235 208 204 949
326 Electronic Digital Logic Circuitry 196 173 185 198 196 948
715 DP: Presentation Processing of Document, Operator Interface Processing, and Screen Saver Display Processing (Data Processing) 137 154 236 220 196 943
530 Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof 81 90 167 274 272 884
348 Television 160 152 200 156 185 853
705 DP: Financial, Business Practice, Management, or Cost/Price Determination (Data Processing) 47 136 210 184 260 837
439 Electrical Connectors 171 170 165 127 165 798
607 Surgery: Light, Thermal, and Electrical Application 158 119 203 193 108 781
604 Surgery (Medicators and Receptors) 190 165 162 126 132 775
341 Coded Data Generation or Conversion 156 145 173 140 159 773
717 DP: Software Development, Installation, and Management (Data Processing) 88 130 205 177 162 762
073 Measuring and Testing 108 153 155 145 159 720
029 Metal Working 123 123 170 154 132 702
372 Coherent Light Generators 186 123 142 110 92 653
330 Amplifiers 135 97 155 145 104 636
428 Stock Material or Miscellaneous Articles 188 142 105 101 75 611
623 Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor 152 109 124 98 102 585
700 DP: Generic Control Systems or Specific Applications (Data Processing) 113 123 134 109 99 578
362 Illumination 99 98 148 120 98 563
473 Games Using Tangible Projectile 106 90 127 126 112 561
379 Telephonic Communications 133 96 125 117 89 560
704 DP: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression (Data Processing) 95 77 133 128 121 554
451 Abrading 112 135 151 80 31 509
726 Information Security 53 46 119 135 137 490
712 Processing Architectures and Instruction Processing, e.g., Processors (Electrical Computers and Digital Processing Systems) 94 85 99 97 106 481
422 Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing 96 93 77 89 107 462
342 Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) 100 78 104 80 89 451
703 DP: Structural Design, Modeling, Simulation, and Emulation (Data Processing) 41 61 139 102 106 449
343 Communications: Radio Wave Antennas 75 113 96 76 82 442
398 Optical Communications 53 60 93 110 96 412
210 Liquid Purification or Separation 99 75 68 86 77 405
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 88 76 94 84 52 394
235 Registers (e.g., cash registers, calculators, devices for counting movements of devices, etc.) 67 51 85 81 107 391
204 Chemistry: Electrical and Wave Energy 93 78 81 76 61 389
323 Electricity: Power Supply or Regulation Systems 66 65 87 90 79 387
701 DP: Vehicles, Navigation, and Relative Location (Data Processing) 85 78 73 77 62 375
280 Land Vehicles 63 84 80 77 66 370
358 Facsimile and Static Presentation Processing 60 51 84 85 87 367
331 Oscillators 79 58 86 79 63 365
436 Chemistry: Analytical and Immunological Testing 75 69 63 82 73 362
430 Radiation Imagery Chemistry: Process, Composition, or Product Thereof 99 72 71 53 54 349
427 Coating Processes 92 72 53 57 71 345
333 Wave Transmission Lines and Networks 65 70 74 60 69 338
708 Arithmetic Processing and Calculating (Electrical Computers) 73 60 79 53 58 323
347 Incremental Printing of Symbolic Information 81 72 47 69 43 312
381 Electrical Audio Signal Processing Systems and Devices 52 49 77 73 59 310
310 Electrical Generator or Motor Structure 69 78 60 51 48 306
725 Interactive Video Distribution Systems 58 47 81 62 52 300
719 Interprogram Communication or Interprocess Communication (Ipc) (Electrical Computers and Digital Processing Systems) 57 61 66 50 65 299
156 Adhesive Bonding and Miscellaneous Chemical Manufacture 90 71 51 56 30 298
219 Electric Heating 73 55 70 68 32 298
137 Fluid Handling 61 77 70 47 40 295
482 Exercise Devices 58 49 68 61 56 292
244 Aeronautics and Astronautics 74 62 56 53 41 286
800 Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes 50 39 56 74 66 285
380 Cryptography 19 43 67 87 65 281
174 Electricity: Conductors and Insulators 63 59 63 44 49 278
315 Electric Lamp and Discharge Devices: Systems 38 64 54 55 60 271
351 Optics: Eye Examining, Vision Testing and Correcting 48 54 43 54 72 271
060 Power Plants 69 62 70 40 26 267
363 Electric Power Conversion Systems 48 51 53 45 55 252
718 Virtual Machine Task or Process Management or Task Management/Control (Electrical Computers and Digital Processing Systems) 43 49 65 46 49 252
052 Static Structures (e.g., Buildings) 63 49 56 45 32 245
378 X-Ray or Gamma Ray Systems or Devices 51 39 54 44 57 245
433 Dentistry 48 44 68 48 34 242
084 Music 37 30 42 65 65 239
206 Special Receptacle or Package 54 43 46 44 51 238
134 Cleaning and Liquid Contact with Solids 55 55 44 46 35 235
216 Etching a Substrate: Processes 46 51 51 40 39 227
248 Supports (e.g., for holding articles, etc.) 50 44 49 43 39 225
062 Refrigeration 49 42 46 51 30 218
429 Chemistry: Electrical Current Producing Apparatus, Product, and Process 60 23 46 44 34 207
002 Apparel 45 47 47 33 31 203
296 Land Vehicles: Bodies and Tops 35 31 50 53 32 201
118 Coating Apparatus 50 38 37 31 44 200
386 Television Signal Processing for Dynamic Recording or Reproducing 34 36 26 49 50 195
706 DP: Artificial Intelligence (Data Processing) 24 39 34 50 48 195
239 Fluid Sprinkling, Spraying, and Diffusing 47 39 36 32 28 182
297 Chairs and Seats 54 27 32 31 36 180
205 Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions 49 50 26 35 19 179
318 Electricity: Motive Power Systems 32 37 37 38 35 179
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 43 44 33 25 27 172
033 Geometrical Instruments 36 38 30 34 33 171
005 Beds 39 31 43 25 28 166
446 Amusement Devices: Toys 48 34 31 29 23 165
369 Dynamic Information Storage or Retrieval 43 26 35 27 33 164
165 Heat Exchange 29 38 54 27 13 161
222 Dispensing (apparatus and process) 39 37 41 24 18 159
015 Brushing, Scrubbing, and General Cleaning 31 24 31 26 44 156
123 Internal-Combustion Engines 32 31 33 28 29 153
004 Baths, Closets, Sinks, and Spittoons 39 38 26 21 26 150
313 Electric Lamp and Discharge Devices 38 35 35 18 21 147
355 Photocopying 34 34 28 21 25 142
273 Amusement Devices: Games 29 19 30 24 34 136
353 Optics: Image Projectors 25 26 21 23 39 134
119 Animal Husbandry 26 27 33 21 26 133
434 Education and Demonstration 38 24 38 20 12 132
114 Ships 22 27 35 25 19 128
220 Receptacles 28 17 41 22 16 124
320 Electricity: Battery or Capacitor Charging or Discharging 23 33 24 19 22 121
290 Prime-Mover Dynamo Plants 27 26 33 20 14 120
040 Card, Picture, or Sign Exhibiting 18 26 26 20 29 119
141 Fluent Material Handling, with Receiver or Receiver Coacting Means 30 27 23 19 16 115
423 Chemistry of Inorganic Compounds 23 14 27 26 20 110
441 Buoys, Rafts, and Aquatic Devices 23 21 26 22 17 109
602 Surgery: Splint, Brace, or Bandage 23 19 35 20 12 109
081 Tools 22 23 27 28 8 108
307 Electrical Transmission or Interconnection Systems 33 11 20 22 22 108
414 Material or Article Handling 38 19 18 16 17 108
405 Hydraulic and Earth Engineering 25 28 26 15 13 107
070 Locks 29 27 19 18 13 106
463 Amusement Devices: Games 31 20 22 12 21 106
252 Compositions 27 17 18 17 25 104
224 Package and Article Carriers 36 25 12 14 13 100
601 Surgery: Kinesitherapy 15 10 31 24 20 100
211 Supports: Racks 18 29 21 15 13 96
251 Valves and Valve Actuation 22 30 27 10 6 95
135 Tent, Canopy, Umbrella, or Cane 28 11 23 21 11 94
417 Pumps 26 12 21 15 19 93
117 Single-Crystal, Oriented-Crystal, and Epitaxy Growth Processes; Non-Coating Apparatus Therefor 22 23 11 24 12 92
426 Food or Edible Material: Processes, Compositions, and Products 21 16 26 16 12 91
336 Inductor Devices 13 25 23 18 11 90
030 Cutlery 21 19 23 9 17 89
036 Boots, Shoes, and Leggings 25 14 18 16 16 89
200 Electricity: Circuit Makers and Breakers 16 16 24 14 19 89
349 Liquid Crystal Cells, Elements and Systems 23 19 11 22 14 89
506 Combinatorial Chemistry Technology: Method, Library, Apparatus 47 37 0 0 5 89
404 Road Structure, Process, or Apparatus 15 10 19 13 28 85
425 Plastic Article or Earthenware Shaping or Treating: Apparatus 16 10 22 20 17 85
401 Coating Implements with Material Supply 14 18 21 20 9 82
180 Motor Vehicles 12 15 15 19 19 80
053 Package Making 11 17 17 16 17 78
099 Foods and Beverages: Apparatus 17 14 13 15 18 77
106 Compositions: Coating or Plastic 28 8 14 17 10 77
208 Mineral Oils: Processes and Products 13 13 14 10 25 75
102 Ammunition and Explosives 16 13 20 11 14 74
366 Agitating (e.g., of articles and materials) 14 19 15 10 16 74
400 Typewriting Machines 24 19 14 12 5 74
396 Photography 21 9 11 8 24 73
415 Rotary Kinetic Fluid Motors or Pumps 18 15 23 11 6 73
043 Fishing, Trapping, and Vermin Destroying 20 15 11 14 12 72
312 Supports: Cabinet Structure 26 16 15 8 7 72
294 Handling: Hand and Hoist-Line Implements 12 13 18 18 10 71
095 Gas Separation: Processes 14 13 15 14 14 70
228 Metal Fusion Bonding 16 14 19 6 14 69
136 Batteries: Thermoelectric and Photoelectric 17 7 15 16 12 67
254 Implements or Apparatus for Applying Pushing or Pulling Force 11 9 25 4 18 67
374 Thermal Measuring and Testing 9 19 18 8 13 67
024 Buckles, Buttons, Clasps, Etc. 7 15 18 11 15 66
285 Pipe Joints or Couplings 19 15 13 9 10 66
072 Metal Deforming 8 13 21 11 12 65
160 Flexible or Portable Closure, Partition, or Panel 13 12 14 15 11 65
502 Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making 11 18 12 11 13 65
367 Communications, Electrical: Acoustic Wave Systems and Devices 17 10 11 14 12 64
431 Combustion 17 15 14 12 6 64
292 Closure Fasteners 11 17 15 13 7 63
384 Bearings 16 9 18 6 14 63
510 Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions 11 9 15 13 14 62
042 Firearms 15 11 10 7 18 61
181 Acoustics 15 11 7 13 14 60
242 Winding, Tensioning, or Guiding 14 11 14 8 13 60
016 Miscellaneous Hardware 15 13 18 6 7 59
132 Toilet 11 11 9 20 8 59
198 Conveyors: Power-Driven 14 6 12 13 14 59
074 Machine Element or Mechanism 9 12 14 12 11 58
124 Mechanical Guns and Projectors 14 10 16 5 13 58
335 Electricity: Magnetically Operated Switches, Magnets, and Electromagnets 11 15 11 8 12 57
166 Wells (shafts or deep borings in the earth, e.g., for oil and gas) 13 10 13 11 9 56
188 Brakes 6 14 12 15 8 55
585 Chemistry of Hydrocarbon Compounds 21 13 9 6 6 55
034 Drying and Gas or Vapor Contact with Solids 6 12 19 6 11 54
126 Stoves and Furnaces 15 11 16 5 7 54
108 Horizontally Supported Planar Surfaces 15 11 8 8 11 53
368 Horology: Time Measuring Systems or Devices 11 7 8 10 17 53
182 Fire Escape, Ladder, or Scaffold 12 8 15 11 5 51
221 Article Dispensing 12 7 11 14 5 49
148 Metal Treatment 17 4 11 11 4 47
403 Joints and Connections 12 12 10 1 12 47
416 Fluid Reaction Surfaces (i.e., Impellers) 12 8 14 7 5 46
475 Planetary Gear Transmission Systems or Components 4 7 4 20 11 46
440 Marine Propulsion 5 9 16 8 7 45
392 Electric Resistance Heating Devices 11 9 12 8 4 44
411 Expanded, Threaded, Driven, Headed, Tool-Deformed, or Locked-Threaded Fastener 11 5 9 11 8 44
047 Plant Husbandry 12 11 7 7 5 42
209 Classifying, Separating, and Assorting Solids 5 8 8 12 9 42
476 Friction Gear Transmission Systems or Components 3 3 13 14 8 41
101 Printing 9 9 13 4 5 40
083 Cutting 10 8 11 6 4 39
175 Boring or Penetrating the Earth 9 9 8 8 5 39
096 Gas Separation: Apparatus 6 10 6 8 8 38
229 Envelopes, Wrappers, and Paperboard Boxes 3 12 9 7 5 36
269 Work Holders 4 7 15 7 3 36
410 Freight Accommodation On Freight Carrier 11 9 6 3 7 36
399 Electrophotography 7 6 6 10 6 35
445 Electric Lamp or Space Discharge Component or Device Manufacturing 11 8 8 3 5 35
215 Bottles and Jars 9 8 3 13 1 34
376 Induced Nuclear Reactions: Processes, Systems, and Elements 12 10 6 4 2 34
472 Amusement Devices 11 6 8 4 4 33
055 Gas Separation 5 4 4 7 12 32
056 Harvesters 8 8 8 4 4 32
301 Land Vehicles: Wheels and Axles 5 8 11 3 5 32
044 Fuel and Related Compositions 10 5 5 6 5 31
089 Ordnance 10 8 8 4 1 31
116 Signals and Indicators 8 2 10 7 3 30
125 Stone Working 5 3 8 10 4 30
508 Solid Anti-Friction Devices, Materials Therefor, Lubricant or Separant Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions 7 6 4 6 7 30
241 Solid Material Comminution or Disintegration 6 4 7 5 7 29
352 Optics: Motion Pictures 10 3 9 2 5 29
063 Jewelry 7 1 10 6 4 28
065 Glass Manufacturing 10 5 3 3 7 28
236 Automatic Temperature and Humidity Regulation 4 4 7 6 7 28
377 Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems 6 10 4 4 4 28
187 Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle 3 6 6 6 6 27
271 Sheet Feeding or Delivering 4 2 8 5 8 27
408 Cutting by Use of Rotating Axially Moving Tool 4 7 8 6 2 27
493 Manufacturing Container or Tube From Paper; or Other Manufacturing From a Sheet or Web 7 9 7 1 3 27
277 Seal for a Joint or Juncture 8 7 3 3 5 26
049 Movable or Removable Closures 9 7 2 2 5 25
383 Flexible Bags 5 10 3 3 4 25
454 Ventilation 10 6 2 4 2 24
164 Metal Founding 8 5 6 2 2 23
110 Furnaces 3 5 7 4 3 22
149 Explosive and Thermic Compositions or Charges 8 10 4 0 0 22
169 Fire Extinguishers 3 2 6 6 5 22
223 Apparel Apparatus 2 2 6 8 4 22
249 Static Molds 6 1 7 4 3 21
261 Gas and Liquid Contact Apparatus 5 2 9 2 3 21
402 Binder Device Releasably Engaging Aperture or Notch of Sheet 6 8 4 2 1 21
450 Foundation Garments 3 7 2 2 7 21
008 Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers 6 4 3 3 4 20
138 Pipes and Tubular Conduits 3 7 4 4 2 20
227 Elongated-Member-Driving Apparatus 3 1 4 8 4 20
322 Electricity: Single Generator Systems 3 4 2 4 7 20
720 Dynamic Optical Information Storage or Retrieval 6 1 5 0 8 20
122 Liquid Heaters and Vaporizers 6 5 1 3 4 19
225 Severing by Tearing or Breaking 2 6 5 4 2 19
144 Woodworking 3 2 6 4 3 18
412 Bookbinding: Process and Apparatus 6 2 5 2 3 18
518 Chemistry: Fischer-Tropsch Processes; or Purification or Recovery of Products Thereof 7 5 2 2 2 18
338 Electrical Resistors 2 1 7 4 3 17
051 Abrasive Tool Making Process, Material, or Composition 5 2 3 4 2 16
075 Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures 5 2 1 5 3 16
104 Railways 5 1 3 4 3 16
152 Resilient Tires and Wheels 2 1 2 5 5 15
256 Fences 4 2 5 2 2 15
267 Spring Devices 4 4 4 1 2 15
432 Heating 3 4 2 3 3 15
082 Turning (e.g., for metal working) 2 1 2 2 7 14
100 Presses 2 2 5 2 3 14
131 Tobacco 6 3 4 1 0 14
293 Vehicle Fenders 4 5 2 1 2 14
329 Demodulators 6 2 3 1 2 14
007 Compound Hand Tools 4 4 4 1 0 13
173 Tool Driving or Impacting 4 1 3 5 0 13
270 Sheet-Material Associating 6 1 4 0 2 13
516 Colloid Systems and Wetting Agents, Subcombinations Thereof, Processes of Making, Stabilizing, Breaking, or Inhibiting 1 3 2 6 1 13
054 Harness for Working Animal 3 1 3 3 2 12
059 Chain, Staple, and Horseshoe Making 3 6 1 0 2 12
177 Weighing Scales 4 1 1 5 1 12
190 Trunks and Hand-Carried Luggage 3 0 3 3 3 12
283 Printed Matter 6 3 1 1 1 12
014 Bridges 3 0 2 1 5 11
232 Deposit and Collection Receptacles 1 3 3 3 1 11
303 Fluid-Pressure and Analogous Brake Systems 3 4 3 0 1 11
409 Gear Cutting, Milling, or Planing 0 2 4 4 1 11
419 Powder Metallurgy Processes 1 1 4 2 3 11
477 Interrelated Power Delivery Controls, Including Engine Control 2 2 4 1 2 11
048 Gas: Heating and Illuminating 0 1 0 4 5 10
092 Expansible Chamber Devices 3 1 2 3 1 10
332 Modulators 3 2 2 1 2 10
501 Compositions: Ceramic 2 1 4 3 0 10
112 Sewing 3 2 2 1 1 9
139 Textiles: Weaving 1 4 4 0 0 9
279 Chucks or Sockets 2 3 1 1 2 9
281 Books, Strips, and Leaves 4 1 0 2 2 9
442 Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, Etc.) 2 1 1 1 4 9
452 Butchering 3 1 3 1 1 9
505 Superconductor Technology: Apparatus, Material, Process 3 1 1 2 2 9
071 Chemistry: Fertilizers 3 3 0 2 0 8
091 Motors: Expansible Chamber Type 4 0 4 0 0 8
150 Purses, Wallets, and Protective Covers 1 1 1 4 1 8
192 Clutches and Power-Stop Control 4 1 1 2 0 8
202 Distillation: Apparatus 3 1 3 0 1 8
337 Electricity: Electrothermally or Thermally Actuated Switches 2 1 2 3 0 8
474 Endless Belt Power Transmission Systems or Components 2 2 2 2 0 8
038 Textiles: Ironing or Smoothing 2 2 1 1 1 7
172 Earth Working 0 4 3 0 0 7
299 Mining or In Situ Disintegration of Hard Material 0 3 2 0 2 7
406 Conveyors: Fluid Current 3 0 2 1 1 7
470 Threaded, Headed Fastener, or Washer Making: Process and Apparatus 1 2 3 0 1 7
001 ** Classification Undetermined ** 0 1 1 3 1 6
012 Boot and Shoe Making 1 0 4 0 1 6
027 Undertaking 1 1 1 2 1 6
168 Farriery 2 1 2 1 0 6
184 Lubrication 1 2 1 0 2 6
194 Check-Actuated Control Mechanisms 2 1 1 1 1 6
588 Hazardous or Toxic Waste Destruction or Containment 0 3 1 2 0 6
037 Excavating 2 2 1 0 0 5
066 Textiles: Knitting 0 1 3 1 0 5
086 Ammunition and Explosive-Charge Making 2 0 2 1 0 5
140 Wireworking 1 0 2 1 1 5
178 Telegraphy 2 1 0 1 1 5
238 Railways: Surface Track 1 0 0 2 2 5
246 Railway Switches and Signals 0 1 1 2 1 5
418 Rotary Expansible Chamber Devices 2 0 1 0 2 5
464 Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts 0 0 1 2 2 5
504 Plant Protecting and Regulating Compositions 1 1 0 2 1 5
507 Earth Boring, Well Treating, and Oil Field Chemistry 0 0 1 1 3 5
111 Planting 0 0 2 1 1 4
162 Paper Making and Fiber Liberation 1 3 0 0 0 4
191 Electricity: Transmission To Vehicles 1 0 2 0 1 4
213 Railway Draft Appliances 1 1 0 0 2 4
334 Tuners 0 0 2 1 1 4
346 Recorders 0 1 1 1 1 4
407 Cutters, for Shaping 1 1 0 1 1 4
105 Railway Rolling Stock 1 1 0 0 1 3
109 Safes, Bank Protection, or a Related Device 0 2 0 0 1 3
420 Alloys or Metallic Compositions 0 0 1 0 2 3
494 Imperforate Bowl: Centrifugal Separators 1 1 1 0 0 3
026 Textiles: Cloth Finishing 0 0 0 1 1 2
057 Textiles: Spinning, Twisting, and Twining 0 0 2 0 0 2
087 Textiles: Braiding, Netting, and Lace Making 0 0 1 0 1 2
157 Wheelwright Machines 0 0 0 2 0 2
203 Distillation: Processes, Separatory 0 0 2 0 0 2
212 Traversing Hoists 0 0 1 1 0 2
266 Metallurgical Apparatus 0 1 1 0 0 2
289 Knots and Knot Tying 1 0 0 1 0 2
298 Land Vehicles: Dumping 1 0 1 0 0 2
388 Electricity: Motor Control Systems 0 0 1 0 1 2
503 Record Receiver Having Plural Interactive Leaves or a Colorless Color Former, Method of Use, or Developer Therefor 0 1 0 0 1 2
512 Perfume Compositions 1 0 0 0 1 2
028 Textiles: Manufacturing 1 0 0 0 0 1
068 Textiles: Fluid Treating Apparatus 0 1 0 0 0 1
076 Metal Tools and Implements, Making 0 0 0 1 0 1
127 Sugar, Starch, and Carbohydrates 1 0 0 0 0 1
159 Concentrating Evaporators 0 1 0 0 0 1
171 Unearthing Plants or Buried Objects 0 0 1 0 0 1
186 Merchandising 1 0 0 0 0 1
193 Conveyors, Chutes, Skids, Guides, and Ways 0 0 0 0 1 1
201 Distillation: Processes, Thermolytic 0 0 1 0 0 1
231 Whips and Whip Apparatus 0 0 0 0 1 1
234 Selective Cutting (e.g., Punching) 0 0 1 0 0 1
295 Railway Wheels and Axles 0 1 0 0 0 1
305 Wheel Substitutes for Land Vehicles 0 0 1 0 0 1
373 Industrial Electric Heating Furnaces 1 0 0 0 0 1
449 Bee Culture (propagating, raising, caring for bees) 0 0 1 0 0 1
453 Coin Handling 1 0 0 0 0 1
462 Books, Strips, and Leaves for Manifolding 0 0 0 1 0 1
483 Tool Changing 0 0 0 0 1 1
492 Roll or Roller 0 1 0 0 0 1
ALL ALL CLASSES 19488 17989 22275 19600 19181 98533

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Electronic Information Products Division - PTMT
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tel: (571) 272-5600
fax: (571) 273-0110
email: oeip@uspto.gov

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