Skip menu navigation Home > Listing of Viewable PTMT Reports > Table of Contents for This Set of Reports

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

IOWA

( 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' )

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
800 Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 1 0 1 0 0 0 0 0 1 1 1 0 0 2 7 1 21 14 30 25 80 91 61 121 46 76 96 77 119 874
056 Harvesters 9 4 15 10 16 18 22 8 16 11 16 19 8 9 16 7 12 15 17 8 1 11 7 8 12 6 19 12 14 4 5 9 12 8 5 18 8 12 14 10 17 10 20 13 511
172 Earth Working 8 6 8 13 13 4 11 20 22 11 7 15 12 10 11 15 4 15 10 10 7 10 19 12 9 10 12 9 9 10 6 8 8 11 10 15 13 7 13 8 8 13 11 10 473
414 Material or Article Handling 10 10 15 15 16 12 6 15 10 14 14 13 21 14 28 8 10 12 18 14 16 5 6 12 6 17 11 12 9 8 5 8 5 7 10 4 9 7 10 5 5 5 5 6 468
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 2 3 3 5 3 1 6 1 4 4 3 4 0 2 3 4 5 5 2 4 1 6 1 5 6 6 8 7 11 9 12 13 9 16 11 16 24 16 21 20 19 16 12 16 345
435 Chemistry: Molecular Biology and Microbiology 3 3 1 2 6 6 1 1 4 6 1 4 3 3 4 5 0 1 1 3 5 2 1 4 2 1 2 1 5 7 9 9 16 5 6 30 27 13 25 20 21 19 16 33 337
280 Land Vehicles 5 5 10 11 4 11 7 10 6 10 7 12 9 10 10 11 4 3 6 4 9 4 10 9 8 8 5 5 8 7 4 5 11 8 2 7 6 3 16 10 6 8 8 3 325
052 Static Structures (e.g., Buildings) 5 1 4 6 8 7 5 3 2 11 3 7 9 12 3 3 5 5 7 5 5 5 2 12 3 7 11 4 5 3 3 7 5 5 7 12 9 13 14 12 10 11 11 4 291
137 Fluid Handling 4 2 7 5 5 7 14 13 14 7 8 7 8 8 8 1 8 4 8 5 5 4 9 9 7 4 3 6 4 7 10 2 5 2 4 8 6 10 12 5 3 8 3 8 287
073 Measuring and Testing 6 4 7 9 2 2 5 3 10 4 2 5 9 3 10 6 3 6 4 5 4 16 11 4 4 5 7 6 4 10 7 4 6 5 9 6 10 8 8 3 7 6 3 5 263
180 Motor Vehicles 0 0 1 7 2 1 13 2 6 8 8 10 12 6 6 4 8 10 5 9 13 6 6 7 10 8 5 5 6 7 2 5 8 6 5 0 2 3 4 13 9 2 8 3 261
119 Animal Husbandry 4 12 17 10 5 8 2 5 10 6 6 6 5 5 3 3 4 8 9 6 10 8 5 1 3 3 7 6 3 8 1 3 2 3 5 6 7 5 8 4 3 4 4 2 245
532 Organic Compounds (includes Classes 532-570) 2 1 1 2 5 1 2 6 5 12 12 2 3 3 5 3 0 4 3 4 3 4 3 4 4 3 8 3 4 2 7 3 7 6 13 15 8 9 6 11 12 8 6 7 232
452 Butchering 3 6 4 1 1 2 3 6 6 8 11 7 5 11 4 2 0 2 1 2 6 1 2 5 8 4 2 5 4 5 4 7 0 3 3 4 6 8 7 1 11 2 5 8 196
361 Electricity: Electrical Systems and Devices 1 1 5 2 3 3 1 2 5 3 4 1 3 2 2 1 1 8 1 1 1 5 1 1 5 1 1 7 7 9 6 4 5 5 3 7 14 4 6 15 12 8 5 6 188
426 Food or Edible Material: Processes, Compositions, and Products 7 5 3 2 3 5 2 4 6 4 3 3 6 3 1 2 4 3 3 3 1 2 2 2 0 2 6 7 7 3 2 4 0 3 1 7 11 6 6 7 10 10 6 6 183
241 Solid Material Comminution or Disintegration 1 4 6 4 4 9 8 6 4 6 3 6 2 4 1 0 0 7 2 2 2 1 3 0 2 2 6 11 6 3 2 2 0 3 3 5 5 11 4 10 4 0 7 7 178
248 Supports (e.g., for holding articles, etc.) 7 5 8 8 8 1 3 2 2 5 4 6 3 2 1 1 1 3 1 4 4 5 3 2 5 3 2 2 5 5 3 2 5 3 6 6 7 4 10 5 7 2 3 3 177
342 Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) 4 7 1 3 5 5 2 0 1 5 5 0 0 2 3 5 2 1 1 1 0 1 1 6 3 2 2 2 4 1 3 3 1 1 0 1 14 10 16 16 14 8 8 6 176
060 Power Plants 1 4 4 2 2 2 4 3 0 2 3 3 5 10 3 5 5 5 2 5 2 12 2 3 5 8 6 2 2 3 4 2 4 4 2 3 0 5 4 8 7 3 6 8 175
340 Communications: Electrical 0 3 3 2 2 2 3 2 6 7 6 2 1 2 3 3 1 3 5 2 3 6 2 3 4 2 2 2 4 1 3 4 6 1 5 6 8 5 9 5 3 6 6 14 168
239 Fluid Sprinkling, Spraying, and Diffusing 6 5 6 7 4 4 3 2 7 6 6 6 2 6 3 7 3 5 1 2 2 0 3 1 5 2 1 2 1 4 2 1 6 2 3 4 5 5 0 1 3 7 9 4 164
074 Machine Element or Mechanism 3 5 5 10 7 6 3 5 4 3 8 3 5 4 4 3 2 5 6 4 4 5 4 2 1 5 2 4 0 2 10 1 1 0 1 4 2 0 4 1 1 5 1 0 155
128 Surgery (includes Class 600) 3 1 0 1 5 0 1 1 3 1 4 3 2 5 5 3 1 3 2 3 0 0 1 2 2 3 7 6 2 6 5 4 6 3 5 7 9 7 6 8 4 5 6 4 155
296 Land Vehicles: Bodies and Tops 0 0 4 3 3 0 5 3 3 9 2 4 1 6 3 5 3 4 5 1 2 1 2 3 1 0 3 4 6 3 4 3 2 1 2 5 6 5 9 5 4 8 3 4 150
210 Liquid Purification or Separation 5 1 2 5 2 3 1 0 1 4 9 4 2 0 2 1 1 4 5 3 4 4 1 4 2 2 0 1 3 1 5 4 7 3 2 4 5 5 3 9 4 6 4 9 147
029 Metal Working 2 1 7 3 4 2 2 4 3 6 4 3 2 1 3 3 1 1 3 0 0 2 1 2 5 6 2 8 2 5 6 2 6 4 3 2 3 3 4 2 5 3 6 6 143
219 Electric Heating 1 1 2 1 1 0 2 3 3 3 7 7 5 3 1 5 4 2 1 3 5 4 10 4 6 4 1 1 6 0 3 2 3 2 0 1 7 7 3 2 3 6 2 5 142
222 Dispensing (apparatus and process) 5 9 18 7 8 5 2 1 4 3 2 2 5 4 4 1 1 4 2 2 3 1 2 4 4 2 1 7 3 0 1 3 2 2 3 5 6 1 1 1 0 0 0 0 141
034 Drying and Gas or Vapor Contact with Solids 1 2 5 4 4 6 4 4 4 4 3 6 3 3 9 3 3 3 3 2 0 2 3 2 0 1 2 2 2 4 1 3 2 7 4 4 4 6 3 3 1 2 4 1 139
235 Registers (e.g., cash registers, calculators, devices for counting movements of devices, etc.) 2 1 2 1 0 0 2 2 0 2 0 2 0 2 1 0 0 0 2 0 0 0 1 1 1 2 3 3 3 5 11 9 6 11 6 10 14 8 4 1 2 6 3 8 137
455 Telecommunications 3 8 7 3 9 1 3 0 1 0 2 1 0 5 0 0 1 1 0 0 6 3 2 0 1 2 3 2 6 3 4 2 2 8 4 0 6 1 3 3 5 9 3 9 132
043 Fishing, Trapping, and Vermin Destroying 1 4 3 2 0 4 3 1 4 1 2 4 6 9 2 0 1 2 2 0 2 3 4 3 7 8 4 8 1 2 5 0 3 3 0 1 6 7 5 0 4 2 0 0 129
473 Games Using Tangible Projectile 1 1 2 2 3 3 1 1 0 1 2 2 1 1 3 2 1 1 1 4 2 3 3 3 4 1 5 3 4 5 8 3 4 4 3 10 6 4 6 6 1 3 0 3 127
062 Refrigeration 3 1 4 5 1 1 4 0 1 2 1 4 4 5 4 1 0 0 1 0 0 0 4 2 2 3 6 5 2 4 2 1 1 1 1 5 4 1 7 4 7 13 2 7 126
111 Planting 0 3 5 0 3 0 0 2 2 1 0 0 0 0 4 1 1 4 1 1 0 1 1 5 5 3 4 2 2 5 0 2 3 7 3 2 10 2 7 4 8 6 3 9 122
701 DP: Vehicles, Navigation, and Relative Location (Data Processing) 0 0 0 0 0 2 0 0 0 1 2 2 0 0 1 2 0 0 0 0 0 0 3 2 2 3 2 1 1 1 1 2 3 4 3 2 11 6 13 11 9 15 10 7 122
324 Electricity: Measuring and Testing 0 0 3 1 2 4 4 4 6 3 7 3 1 1 6 1 0 1 4 1 2 0 2 1 1 1 0 5 5 3 3 2 3 1 1 1 5 4 6 4 3 4 4 4 117
200 Electricity: Circuit Makers and Breakers 2 3 7 6 2 3 2 5 6 6 1 4 3 3 1 1 0 0 5 1 0 1 3 0 4 3 2 0 0 1 0 2 8 6 3 9 1 0 3 2 2 1 1 1 114
297 Chairs and Seats 2 4 6 1 1 1 1 2 1 2 3 3 2 5 3 2 1 1 2 0 0 0 2 1 2 3 3 2 1 1 1 4 4 5 0 5 4 6 3 0 2 6 10 5 113
362 Illumination 0 2 0 3 3 3 1 1 0 2 0 1 0 1 0 1 0 2 2 0 3 2 1 0 3 2 2 4 4 4 5 5 3 4 4 5 6 3 6 7 0 5 5 7 112
037 Excavating 3 4 4 3 5 2 4 4 3 1 4 2 3 1 2 2 4 1 5 6 3 1 1 1 0 2 1 1 2 0 0 0 1 2 1 2 4 4 1 3 2 6 5 3 109
417 Pumps 2 3 4 3 5 1 5 6 3 3 3 1 5 5 4 3 2 1 1 0 3 3 2 1 3 0 1 1 1 3 3 0 2 5 0 1 2 6 4 1 2 3 0 1 108
123 Internal-Combustion Engines 2 1 1 0 1 1 1 0 2 0 0 4 2 3 5 6 3 2 3 2 9 1 6 0 2 0 1 2 2 3 3 6 1 3 1 2 2 2 5 3 2 1 4 6 106
460 Crop Threshing or Separating 5 0 2 1 1 1 7 5 11 3 1 2 1 1 0 0 2 1 1 2 1 3 3 3 0 1 2 1 1 2 0 3 8 3 2 1 1 3 7 1 2 2 6 3 106
343 Communications: Radio Wave Antennas 3 4 6 1 4 3 1 4 3 0 2 0 1 0 1 1 0 1 0 0 0 0 2 0 2 1 1 0 2 0 5 6 5 9 2 1 1 3 5 3 5 4 5 6 103
198 Conveyors: Power-Driven 3 5 5 9 3 2 3 2 7 0 6 3 3 0 2 2 0 4 1 1 2 1 0 1 2 2 0 1 2 3 5 3 2 1 1 2 2 1 0 5 1 1 2 1 102
327 Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems 2 1 3 3 4 4 5 8 10 8 5 4 4 5 5 0 0 0 1 0 0 0 2 2 2 0 1 1 3 1 1 2 1 2 0 0 0 3 0 1 1 1 3 3 102
366 Agitating (e.g., of articles and materials) 2 5 5 7 1 2 4 0 8 3 1 2 0 0 2 1 3 2 2 4 3 2 2 0 2 0 5 4 3 2 0 2 1 3 8 3 2 1 0 0 1 1 1 1 101
126 Stoves and Furnaces 3 2 2 5 1 2 1 3 1 2 0 1 1 1 3 5 3 7 10 6 5 6 1 5 4 0 2 0 2 4 1 1 1 2 1 1 1 1 0 0 2 1 0 0 100
312 Supports: Cabinet Structure 1 1 1 4 1 3 0 3 2 3 0 2 2 0 0 1 0 1 2 2 0 0 0 1 3 1 3 1 1 3 5 6 6 3 0 2 6 7 1 3 0 3 9 6 99
212 Traversing Hoists 0 2 1 1 1 3 0 0 0 0 6 9 2 3 2 0 3 2 4 4 6 5 11 12 6 1 0 0 1 0 0 0 0 0 0 1 3 1 0 0 0 1 0 0 91
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 1 0 2 2 1 1 4 0 0 4 1 0 3 4 1 4 5 2 2 2 2 2 2 1 1 3 0 2 2 5 4 1 2 3 1 1 4 3 2 1 5 2 0 2 90
482 Exercise Devices 2 3 2 2 3 3 1 3 2 3 2 1 2 1 2 0 3 1 3 4 3 2 0 1 1 3 2 1 2 1 0 0 1 2 2 0 4 3 5 7 3 0 1 2 89
091 Motors: Expansible Chamber Type 2 3 2 4 1 1 0 3 4 4 5 1 7 1 3 3 0 1 2 3 1 2 3 5 1 2 3 2 1 0 0 2 1 1 1 0 2 0 6 1 2 1 0 1 88
251 Valves and Valve Actuation 3 1 2 0 4 1 3 2 1 2 1 1 1 1 3 0 0 2 0 0 1 0 2 6 1 1 4 0 5 4 3 0 1 3 1 4 3 0 0 0 1 4 10 6 88
335 Electricity: Magnetically Operated Switches, Magnets, and Electromagnets 2 0 3 1 2 1 2 0 6 3 0 3 0 7 1 2 3 1 1 0 4 1 2 2 0 0 0 3 0 3 1 4 5 4 2 3 4 1 2 1 2 4 2 0 88
033 Geometrical Instruments 4 3 3 1 4 5 0 1 2 3 0 5 1 1 3 1 1 1 1 3 1 3 0 1 1 1 2 4 1 1 2 1 3 1 1 2 2 3 4 1 1 3 1 2 85
068 Textiles: Fluid Treating Apparatus 1 0 6 4 7 2 1 1 2 2 3 2 0 1 0 3 0 0 1 0 1 2 4 0 2 0 2 0 4 0 0 0 2 1 1 6 8 3 3 3 2 2 2 1 85
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 0 0 1 2 1 0 1 1 0 2 4 2 0 4 0 0 1 0 2 2 1 2 2 2 1 2 2 2 3 4 0 5 3 3 2 7 5 5 2 6 2 0 0 1 85
100 Presses 0 1 2 1 1 0 1 0 0 1 3 4 8 2 2 5 3 0 1 0 3 9 0 1 1 3 2 0 2 2 2 2 0 1 1 1 4 1 0 0 2 4 0 8 84
318 Electricity: Motive Power Systems 1 3 7 1 1 3 6 1 4 4 4 2 0 1 3 1 2 0 1 5 2 1 2 1 1 0 1 2 3 2 1 1 1 1 1 2 1 2 3 1 1 2 2 0 84
345 Computer Graphics Processing and Selective Visual Display Systems 0 0 0 2 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 2 1 1 1 3 3 1 1 1 3 0 3 1 4 6 5 8 9 8 7 6 3 83
403 Joints and Connections 1 2 3 0 5 2 0 0 3 0 1 3 2 6 2 1 3 4 3 2 1 2 2 0 2 1 1 0 1 0 0 1 2 2 2 4 1 1 4 2 3 1 6 1 83
053 Package Making 0 1 0 2 2 2 4 3 5 2 2 2 3 1 1 1 0 2 0 0 2 0 1 1 7 1 3 7 1 1 2 0 0 0 1 1 3 0 0 0 9 2 2 4 81
370 Multiplex Communications 0 0 0 0 1 0 0 0 0 0 3 1 1 1 1 1 2 1 1 0 2 0 1 0 0 0 0 3 0 1 1 2 0 2 5 7 7 4 2 9 5 5 6 5 80
375 Pulse or Digital Communications 0 1 0 0 1 0 0 1 1 0 4 0 1 0 0 0 1 0 0 0 0 1 1 4 0 0 3 2 1 0 1 5 7 4 1 6 6 3 3 3 2 6 6 4 79
425 Plastic Article or Earthenware Shaping or Treating: Apparatus 1 4 5 4 0 1 1 2 2 6 2 2 2 1 4 0 0 0 3 0 1 1 2 2 5 3 1 2 0 1 2 0 3 2 2 4 0 0 2 0 2 1 1 2 79
702 DP: Measuring, Calibrating, or Testing (Data Processing) 0 0 0 0 0 0 0 0 1 1 0 0 1 1 1 0 0 0 2 1 0 2 0 2 2 0 2 1 0 1 2 3 1 3 1 3 4 6 4 7 10 7 7 3 79
206 Special Receptacle or Package 0 3 1 5 3 1 0 1 0 2 1 1 1 4 2 1 0 0 0 0 0 2 0 2 4 1 4 1 3 2 2 1 3 0 0 6 4 4 4 1 4 1 1 2 78
220 Receptacles 2 2 2 0 1 1 5 1 1 1 0 2 2 4 0 5 2 3 0 2 0 1 2 2 2 2 0 2 3 2 1 4 1 2 4 2 3 1 1 2 2 0 0 1 76
700 DP: Generic Control Systems or Specific Applications (Data Processing) 0 0 0 0 0 0 0 0 2 1 1 0 0 0 0 0 3 1 1 0 0 0 1 1 1 0 0 3 1 3 5 4 3 4 4 3 2 4 4 4 3 5 2 9 75
002 Apparel 3 2 8 1 1 2 0 2 1 0 2 1 0 0 0 0 2 1 2 1 0 4 1 2 6 2 2 1 4 2 0 2 2 2 0 2 1 2 1 1 3 1 3 1 74
005 Beds 0 1 2 4 2 0 2 4 1 6 2 1 1 0 1 0 0 0 2 1 1 0 3 3 2 1 1 0 2 2 1 1 3 0 3 2 1 1 1 1 3 3 2 6 73
379 Telephonic Communications 0 0 1 1 0 0 0 0 2 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 1 1 1 1 0 1 1 0 6 8 5 8 5 5 10 3 5 2 4 73
404 Road Structure, Process, or Apparatus 2 2 3 2 5 1 2 2 0 2 1 0 0 1 2 2 1 3 0 0 1 1 1 1 1 0 3 2 1 1 4 2 1 2 2 1 5 6 0 1 2 0 1 3 73
428 Stock Material or Miscellaneous Articles 0 1 1 1 0 0 0 1 1 3 1 2 2 1 1 0 0 1 1 0 0 1 1 1 1 0 0 2 2 3 2 1 4 5 2 6 3 5 6 1 2 4 1 0 70
049 Movable or Removable Closures 2 3 1 4 3 1 2 0 2 3 0 3 2 1 0 2 1 3 2 0 2 0 1 1 2 2 1 1 2 1 3 2 0 0 1 0 3 1 4 3 0 1 2 1 69