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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 1963 - 2006 Utility Patent Grants,
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

VIRGINIA

( patent origin is determined by the residence of the first-named inventor )
( technology class is determined by the primary classification assigned to the patent- see 'Explanation of Data' )

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The following table displays technology classes and counts of associated patents, as distributed by the year of patent grant.
Class Class Title 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 Total
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 2 1 3 4 4 4 4 5 5 2 4 5 7 11 20 4 12 11 15 10 8 6 10 10 10 13 26 17 22 21 23 17 26 32 39 50 41 55 36 38 53 18 20 22 746
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 11 5 16 25 16 16 20 23 25 29 20 18 21 6 6 20 13 5 7 11 17 13 13 7 9 8 19 22 19 41 36 29 20 19 16 16 18 22 15 14 12 20 12 11 741
073 Measuring and Testing 8 9 16 17 16 10 18 22 23 12 22 11 14 15 21 12 8 7 10 9 15 16 8 12 16 14 15 19 23 21 20 17 15 20 14 22 16 22 21 7 22 13 9 14 671
428 Stock Material or Miscellaneous Articles 3 6 5 7 13 13 11 15 16 10 8 20 20 17 12 15 6 12 10 7 11 7 9 10 7 5 20 13 18 19 20 13 27 24 26 19 29 27 19 18 22 17 12 19 637
532 Organic Compounds (includes Classes 532-570) 10 19 23 28 34 19 26 23 14 33 19 12 21 15 3 10 9 8 9 15 7 11 9 19 10 7 14 15 19 10 16 12 8 12 22 9 15 6 11 18 8 10 6 11 635
131 Tobacco 9 5 4 12 15 17 11 14 9 10 7 8 3 8 11 10 8 11 26 20 15 15 28 25 25 5 13 6 23 36 28 9 12 10 16 10 9 7 8 9 10 16 8 5 566
250 Radiant Energy 1 3 8 6 9 12 16 12 10 5 15 13 5 13 13 10 12 4 7 4 4 5 7 6 9 7 16 24 16 11 12 18 17 13 10 11 8 14 14 14 15 14 15 22 480
455 Telecommunications 5 5 1 3 6 2 4 0 2 5 8 4 8 4 7 5 6 3 1 6 2 7 12 4 6 5 7 8 11 19 5 5 12 16 11 30 21 23 28 21 16 13 21 31 419
052 Static Structures (e.g., Buildings) 12 5 16 12 9 14 8 10 6 10 5 9 6 5 9 9 6 5 11 3 7 6 4 6 13 11 7 5 9 10 11 7 10 12 20 15 17 11 15 5 2 5 8 4 390
340 Communications: Electrical 2 0 6 4 6 5 8 4 13 11 15 11 8 9 6 7 2 2 9 3 3 4 2 6 8 5 11 9 8 6 3 11 8 9 10 12 10 18 11 15 8 14 28 36 386
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 7 8 6 9 17 6 12 8 10 9 12 4 5 3 11 12 3 5 3 4 3 5 4 7 3 6 11 10 19 14 14 10 8 13 16 16 10 8 5 5 11 6 4 5 367
128 Surgery (includes Class 600) 1 3 3 3 2 1 1 2 0 5 3 6 7 4 3 4 1 6 5 8 1 7 9 1 6 11 13 11 17 13 13 13 13 10 9 12 11 11 28 16 21 23 9 18 364
342 Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) 6 3 6 8 15 6 7 4 4 9 20 10 18 7 11 3 0 11 3 1 0 3 8 3 2 3 4 5 10 7 9 8 8 17 7 9 9 14 11 16 15 11 5 13 349
324 Electricity: Measuring and Testing 2 2 2 8 7 6 10 4 8 8 9 4 10 10 4 7 5 3 4 6 9 5 6 10 11 5 12 14 11 16 10 5 14 6 11 7 8 1 8 13 9 9 8 20 347
244 Aeronautics and Astronautics 7 8 17 12 11 12 13 11 6 5 8 5 6 8 3 3 4 5 5 3 8 5 11 8 6 7 7 13 9 17 10 5 5 8 6 6 9 8 7 8 7 11 7 6 346
210 Liquid Purification or Separation 1 1 6 2 1 2 4 3 6 12 7 5 5 7 8 4 3 2 9 5 7 7 10 4 5 4 10 10 8 18 16 13 5 7 7 8 8 14 16 12 9 13 12 14 330
370 Multiplex Communications 0 0 2 1 0 0 0 0 4 3 0 4 2 2 1 1 2 2 3 1 1 3 2 3 1 3 5 4 7 5 10 8 17 11 16 21 10 24 16 25 26 20 23 31 320
029 Metal Working 6 7 7 10 11 6 8 5 7 16 3 4 10 6 1 2 4 7 3 7 5 6 4 4 7 7 10 9 9 9 10 6 3 5 8 11 8 9 15 10 11 11 7 5 319
379 Telephonic Communications 2 2 3 4 6 4 6 3 2 3 3 3 3 1 2 4 6 2 0 0 2 1 4 3 1 4 6 5 2 4 11 9 15 8 10 21 15 19 22 16 17 29 13 20 316
435 Chemistry: Molecular Biology and Microbiology 0 2 1 0 2 0 1 4 1 3 4 2 4 1 3 0 1 3 4 7 6 4 5 1 3 3 5 3 2 7 9 17 8 14 20 21 18 22 21 20 14 13 15 14 308
239 Fluid Sprinkling, Spraying, and Diffusing 1 1 4 5 4 1 5 7 5 6 5 4 4 1 1 4 1 2 1 0 1 0 1 3 1 1 1 5 3 2 7 11 8 14 5 11 8 16 19 25 32 31 16 14 297
385 Optical Waveguides 0 0 0 0 0 0 0 0 0 0 0 3 1 4 4 7 8 3 10 3 5 6 9 4 9 9 6 8 6 8 11 10 9 3 6 5 9 12 11 17 16 30 31 13 296
062 Refrigeration 5 8 5 12 16 11 9 2 2 6 7 4 4 7 3 7 1 4 10 4 11 5 6 3 5 3 8 12 7 13 6 10 8 5 2 4 9 6 7 8 6 10 4 6 291
356 Optics: Measuring and Testing 0 1 1 1 1 3 7 6 12 4 6 8 5 9 7 3 6 6 9 4 8 6 8 8 3 5 7 10 6 10 7 11 8 9 4 11 6 13 4 6 15 4 14 8 290
318 Electricity: Motive Power Systems 8 4 7 7 10 5 10 8 15 17 7 8 9 9 5 4 1 4 13 8 6 19 10 9 10 8 2 5 6 0 3 3 1 2 1 2 4 4 4 6 9 6 5 2 286
123 Internal-Combustion Engines 1 1 1 1 2 1 2 1 2 2 4 12 4 10 4 3 6 3 1 1 2 0 2 4 2 3 8 8 12 12 7 7 6 15 4 16 9 19 17 23 13 9 9 5 274
156 Adhesive Bonding and Miscellaneous Chemical Manufacture 2 1 2 6 6 13 11 9 8 13 15 7 5 6 6 6 1 3 6 7 3 6 8 3 5 6 3 6 6 10 7 11 7 6 5 6 6 7 8 2 3 7 6 1 271
206 Special Receptacle or Package 5 5 13 12 9 14 10 5 9 3 1 4 2 5 6 1 2 2 3 2 4 4 8 6 2 7 7 9 2 12 15 12 4 7 2 10 7 5 10 5 6 4 5 3 269
359 Optics: Systems and Elements 0 1 1 0 2 0 2 5 4 6 5 1 4 4 3 3 2 8 6 1 1 3 15 2 6 5 7 11 9 8 7 8 6 9 9 21 13 6 8 5 7 8 16 13 261
137 Fluid Handling 2 4 8 15 10 6 16 12 8 8 5 8 3 4 4 5 2 10 6 7 3 7 2 6 4 4 5 2 4 7 1 6 4 4 2 5 5 7 3 5 5 4 6 7 251
376 Induced Nuclear Reactions: Processes, Systems, and Elements 7 3 4 15 5 6 2 2 2 4 2 4 2 4 4 7 8 9 3 9 6 5 2 4 4 7 7 3 17 19 14 11 8 4 5 4 4 0 1 2 3 1 2 0 235
427 Coating Processes 4 1 2 3 4 6 4 9 5 7 5 2 5 6 5 2 1 5 6 2 4 3 7 11 4 7 1 2 10 8 10 3 9 6 4 6 9 10 5 4 5 4 6 3 225
361 Electricity: Electrical Systems and Devices 2 6 4 4 6 7 3 4 9 7 7 2 9 4 5 1 4 8 3 9 2 7 2 5 8 4 3 1 4 8 5 3 5 4 2 7 8 4 5 10 10 2 7 3 223
348 Television 2 0 0 2 5 3 0 2 4 5 6 4 4 8 8 6 2 5 5 2 1 1 4 7 0 2 4 7 5 4 2 7 5 11 5 17 7 10 14 18 7 6 1 2 220
220 Receptacles 5 5 6 10 8 7 6 1 4 6 4 8 0 11 4 0 6 3 6 2 1 1 5 6 2 5 6 9 7 3 5 7 8 3 5 8 5 4 7 3 2 1 1 3 209
002 Apparel 1 2 2 4 2 3 1 5 5 0 3 5 5 5 4 3 6 5 1 1 0 4 0 4 2 1 6 9 14 9 6 5 10 9 13 8 6 6 4 8 3 5 6 6 207
102 Ammunition and Explosives 8 4 4 8 7 4 5 7 10 12 15 5 3 10 4 4 2 2 1 1 1 4 3 2 2 3 2 3 3 5 7 2 3 0 5 3 4 5 4 11 7 6 2 3 206
248 Supports (e.g., for holding articles, etc.) 4 3 5 1 9 2 1 4 5 3 2 2 5 3 3 2 2 2 3 4 2 1 7 3 5 4 2 1 5 7 8 5 8 3 6 5 11 11 10 15 5 5 6 5 205
280 Land Vehicles 2 6 3 5 1 3 2 4 3 6 4 2 7 6 3 4 3 5 2 6 4 1 6 6 3 4 1 4 4 1 4 5 7 8 5 7 4 8 5 11 6 5 6 13 205
219 Electric Heating 0 0 4 7 4 3 3 4 6 4 2 3 1 5 3 2 2 6 5 7 5 5 8 3 2 1 6 5 1 2 7 5 3 8 4 5 9 4 5 12 10 7 4 5 197
060 Power Plants 14 8 7 12 4 2 3 2 8 5 12 2 6 8 3 8 2 1 3 7 6 3 0 1 1 2 5 1 0 3 2 2 4 2 1 3 3 5 3 7 4 7 8 5 195
114 Ships 3 5 6 7 7 3 4 1 3 6 6 4 6 9 5 6 1 3 3 6 2 3 3 3 3 2 4 4 4 4 8 6 5 8 2 3 5 5 7 2 5 7 2 3 194
438 Semiconductor Device Manufacturing: Process 0 1 1 0 2 1 1 0 1 2 0 0 3 2 3 7 8 2 10 4 4 5 3 3 4 2 6 6 4 2 2 7 2 4 3 1 6 16 10 14 13 13 8 7 193
473 Games Using Tangible Projectile 1 1 2 3 1 3 3 0 3 5 1 5 4 2 6 2 4 1 3 3 2 1 4 0 5 4 2 3 12 8 6 7 12 6 10 10 12 8 2 2 8 6 4 4 191
033 Geometrical Instruments 4 10 5 4 3 3 6 5 4 6 7 6 3 3 5 5 3 6 1 3 6 7 3 1 5 2 6 7 4 3 3 1 5 2 5 1 2 5 8 3 5 2 5 5 188
198 Conveyors: Power-Driven 1 1 8 8 5 2 3 0 9 2 2 2 5 5 2 6 1 0 3 5 4 1 3 0 1 5 8 9 9 12 12 7 4 10 4 5 2 7 5 4 3 0 1 2 188
310 Electrical Generator or Motor Structure 2 0 2 2 5 1 3 3 1 1 2 2 3 4 2 1 2 1 2 2 7 3 5 1 3 2 4 0 5 1 3 6 2 2 1 6 6 14 11 12 7 22 13 11 188
426 Food or Edible Material: Processes, Compositions, and Products 3 2 5 1 10 3 2 4 4 7 4 3 7 4 2 2 0 0 1 0 4 3 2 1 1 1 1 9 5 3 5 9 12 6 3 3 14 13 9 7 6 1 1 1 184
257 Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) 0 0 0 0 1 1 1 0 0 0 1 2 0 7 5 5 5 7 2 2 4 0 2 0 2 1 4 4 4 3 1 7 0 4 5 13 6 6 12 16 13 14 10 7 177
606 Surgery (instruments) 2 0 1 0 0 1 0 1 0 3 1 5 1 0 0 3 1 1 1 2 2 1 4 2 6 1 6 8 6 3 4 6 6 8 7 13 9 18 12 6 9 6 5 5 176
425 Plastic Article or Earthenware Shaping or Treating: Apparatus 4 3 4 7 8 4 2 7 5 5 8 7 3 12 6 2 2 4 4 4 2 2 4 2 5 1 1 3 1 4 2 5 1 3 6 6 4 3 0 5 3 2 2 2 170
604 Surgery (Medicators and Receptors) 1 0 1 2 4 1 0 2 3 1 2 3 4 4 1 0 1 3 3 2 3 2 5 5 10 6 11 7 7 8 5 2 3 2 2 11 5 9 2 7 7 3 5 4 169
439 Electrical Connectors 0 0 4 2 4 7 3 4 10 4 2 3 3 4 0 2 2 3 6 7 3 3 9 4 8 6 7 8 3 3 2 2 5 1 5 3 8 3 2 3 2 2 3 0 165
434 Education and Demonstration 1 2 4 4 3 3 2 2 3 4 3 6 5 5 5 2 2 2 2 5 4 3 2 1 4 1 3 2 4 2 5 3 6 5 5 5 8 5 2 7 7 8 4 1 162
375 Pulse or Digital Communications 0 0 0 1 0 1 1 3 0 2 2 0 0 2 2 1 2 1 2 4 3 3 3 3 3 2 2 4 5 6 5 2 3 5 6 8 7 7 8 7 13 9 12 8 158
072 Metal Deforming 2 2 8 8 8 7 6 6 6 7 4 9 0 1 1 4 4 1 3 2 0 4 3 2 2 2 3 2 1 5 5 5 3 0 7 5 1 2 3 3 3 3 2 2 157
053 Package Making 2 4 1 7 4 7 3 9 10 5 6 12 4 3 4 3 5 2 2 0 1 2 7 3 1 2 1 3 5 2 4 2 6 2 0 3 4 5 3 1 1 2 1 2 156
709 Multicomputer Data Transferring (Electrical Computers and Digital Processing Systems) 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 2 1 3 6 4 8 7 12 11 21 10 19 18 29 155
222 Dispensing (apparatus and process) 6 2 4 9 5 2 3 2 9 8 6 2 3 4 1 1 0 2 2 3 3 2 2 0 3 3 3 2 4 4 9 6 1 2 3 4 7 5 1 3 8 1 1 2 153
315 Electric Lamp and Discharge Devices: Systems 0 3 2 3 5 2 2 4 4 0 9 7 4 3 1 1 1 3 4 1 5 1 2 2 3 4 3 3 6 0 4 5 3 6 2 3 3 10 1 7 9 6 4 2 153
372 Coherent Light Generators 0 0 0 2 0 0 1 2 3 2 3 0 1 5 2 1 3 3 3 5 3 2 2 2 5 5 7 9 12 7 7 8 4 9 3 5 1 4 4 4 4 1 4 3 151
363 Electric Power Conversion Systems 1 4 3 16 17 7 5 5 5 2 3 2 1 2 3 1 1 5 2 0 1 2 4 0 1 2 3 0 2 2 2 3 2 3 1 5 4 3 4 4 2 4 6 4 149
162 Paper Making and Fiber Liberation 1 1 3 1 4 4 3 2 4 3 2 3 3 5 3 1 1 1 2 0 1 2 3 2 1 1 7 5 6 4 4 11 2 4 4 4 5 6 7 9 6 2 2 3 148
242 Winding, Tensioning, or Guiding 8 3 11 7 7 4 8 3 7 4 2 8 6 3 6 2 1 2 0 6 2 4 4 2 2 3 4 2 2 1 4 1 1 2 2 1 3 1 1 4 1 1 1 1 148
405 Hydraulic and Earth Engineering 0 1 2 1 6 4 3 2 3 0 6 3 3 4 6 3 0 2 2 3 2 4 0 1 1 5 3 4 8 4 3 5 1 6 4 6 3 5 5 7 3 3 2 7 146
273 Amusement Devices: Games 1 1 2 1 1 5 2 3 3 5 2 1 3 3 3 1 3 4 6 2 4 8 3 5 5 4 7 3 5 2 4 7 4 6 3 6 4 1 4 2 4 0 2 0 145
414 Material or Article Handling 1 2 5 6 4 2 4 6 4 3 3 4 7 3 5 6 1 3 5 3 2 1 3 4 1 2 2 2 7 6 3 2 6 1 0 3 0 3 4 2 2 4 1 5 143
327 Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems 5 3 4 1 7 3 8 9 14 6 8 5 4 5 7 2 0 2 1 1 4 2 2 2 3 1 3 0 0 2 1 1 1 1 0 2 0 3 2 6 0 4 4 3 142
119 Animal Husbandry 2 4 4 2 5 2 1 2 1 2 8 2 1 3 3 1 3 3 2 3 2 3 1 1 0 4 4 4 2 6 7 2 2 4 6 9 8 2 5 6 3 2 2 2 141
362 Illumination 2 0 3 2 2 0 1 1 0 2 1 0 0 0 1 0 1 0 1 1 3 6 5 2 1 4 3 4 2 2 4 2 4 3 2 4 7 9 10 14 5 7 7 12 140
030 Cutlery 5 1 4 2 3 2 0 3 7 4 1 5 6 2 1 2 1 5 1 1 1 5 3 3 2 1 4 6 6 2 0 4 0 4 6 2 2 7 5 7 7 2 2 1 138
229 Envelopes, Wrappers, and Paperboard Boxes 6 5 4 7 15 12 6 4 1 1 4 0 2 3 3 1 2 3 3 0 1 1 1 0 1 2 3 3 2 6 4 4 8 1 2 4 3 4 3 0 0 1 1 0 137
382 Image Analysis 0 0 1 1 1 1 0 4 1 0 1 2 2 0 1 1 0 1 0 1 0 0 0 2 3 0 0 4 2 6 5 11 3 6 4 5 10 6 11 5 6 11 8 11 137
707 DP: Database and File Management or Data Structures (Data Processing) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 1 0 0 1 1 2 1 3 9 6 3 8 15 16 25 18 26 137
423 Chemistry of Inorganic Compounds 3 5 4 0 10 4 6 2 5 5 2 4 7 12 4 2 3 5 1 2 1 4 2 1 3 0 2 2 3 5 0 5 1 2 0 1 3 1 1 3 2 1 3 3 135
165 Heat Exchange 1 4 9 12 5 5 3 1 6 1 2 3 2 5 3 2 2 3 3 4 2 3 1 3 0 2 3 1 1 2 4 2 1 5 1 2 0 4 1 2 2 3 6 7 134
705 DP: Financial, Business Practice, Management, or Cost/Price Determination (Data Processing) 0 0 0 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 3 0 0 0 1 0 0 1 1 0 3 2 2 1 3 2 8 11 18 12 12 10 5 10 25 134
482 Exercise Devices 0 0 0 0 0 2 1 0 3 2 1 0 1 1 1 2 0 4 1 1 2 5 0 5 1 3 1 4 6 6 5 6 3 2 5 7 6 6 7 7 7 3 5 10 132
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