U.S. PATENT AND TRADEMARK OFFICE
Information Products Division
Technology Assessment and Forecast (TAF) Branch

Patenting By Geographic Region (State and Country), Breakout By Technology Class
Count of 1997 - 2001 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')
 
Class Class Title 1997 1998 1999 2000 2001 Total
800 Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes 25 79 91 61 121 377
435 Chemistry: Molecular Biology and Microbiology 6 31 27 14 25 103
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 11 16 24 16 21 88
172 Earth Working 10 15 13 7 13 58
056 Harvesters 5 18 8 12 14 57
052 Static Structures (e.g., Buildings) 7 12 9 13 14 55
532 Organic Compounds (includes Classes 532-570) 13 15 8 9 6 51
073 Measuring and Testing 9 6 10 8 8 41
235 Registers (e.g., cash registers, calculators, devices for counting movements of devices, etc.) 6 9 14 8 4 41
137 Fluid Handling 4 8 6 10 12 40
342 Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) 0 1 13 10 16 40
414 Material or Article Handling 10 4 9 7 10 40
701 DP: Vehicles, Navigation, and Relative Location (Data Processing) 3 2 12 6 13 36
128 Surgery (includes Class 600) 5 7 9 7 6 34
280 Land Vehicles 2 7 6 3 16 34
361 Electricity: Electrical Systems and Devices 3 7 14 4 6 34
248 Supports (e.g., for holding articles, etc.) 6 6 7 4 10 33
340 Communications: Electrical 5 6 8 4 9 32
119 Animal Husbandry 5 6 7 5 8 31
379 Telephonic Communications 8 5 8 5 5 31
426 Food or Edible Material: Processes, Compositions, and Products 1 7 11 6 6 31
345 Computer Graphics Processing, Operator Interface Processing, and Selective Visual Display Systems 3 5 7 6 8 29
473 Games Using Tangible Projectile 3 10 6 4 6 29
241 Solid Material Comminution or Disintegration 3 5 5 11 4 28
452 Butchering 3 4 6 8 7 28
296 Land Vehicles: Bodies and Tops 2 5 6 5 9 27
370 Multiplex Communications 5 7 7 4 2 25
111 Planting 3 2 10 2 7 24
362 Illumination 4 5 6 3 6 24
034 Drying and Gas or Vapor Contact with Solids 4 4 4 6 3 21
068 Textiles: Fluid Treating Apparatus 1 6 8 3 3 21
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 2 7 5 5 2 21
428 Stock Material or Miscellaneous Articles 2 6 3 4 6 21
008 Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers 1 4 8 1 6 20
320 Electricity: Battery or Capacitor Charging or Discharging 3 2 7 4 4 20
043 Fishing, Trapping, and Vermin Destroying 0 1 6 7 5 19
210 Liquid Purification or Separation 2 4 5 5 3 19
375 Pulse or Digital Communications 1 6 6 3 3 19
606 Surgery (instruments) 0 4 10 3 2 19
709 Multiple Computer or Process Coordinating (Electrical Computers and Digital Processing Systems) 2 4 3 5 5 19
062 Refrigeration 1 5 4 1 7 18
206 Special Receptacle or Package 0 6 4 4 4 18
219 Electric Heating 0 1 7 7 3 18
297 Chairs and Seats 0 5 4 6 3 18
702 DP: Measuring, Calibrating, or Testing (Data Processing) 1 3 4 6 4 18
239 Fluid Sprinkling, Spraying, and Diffusing 3 4 5 5 0 17
324 Electricity: Measuring and Testing 1 1 5 4 6 17
434 Education and Demonstration 2 6 1 2 6 17
700 DP: Generic Control Systems or Specific Applications (Data Processing) 4 3 2 4 4 17
200 Electricity: Circuit Makers and Breakers 3 9 1 0 3 16
222 Dispensing (apparatus and process) 3 5 6 1 1 16
312 Supports: Cabinet Structure 0 2 6 7 1 16
029 Metal Working 3 2 3 3 4 15
092 Expansible Chamber Devices 0 3 3 2 7 15
060 Power Plants 2 3 0 5 4 14
134 Cleaning and Liquid Contact with Solids 6 2 3 0 3 14
180 Motor Vehicles 5 0 2 3 4 14
204 Chemistry: Electrical and Wave Energy 2 3 6 2 1 14
349 Liquid Crystal Cells, Elements and Systems 5 1 5 1 2 14
366 Agitating (e.g., of articles and materials) 8 3 2 1 0 14
404 Road Structure, Process, or Apparatus 2 1 5 6 0 14
451 Abrading 4 0 1 4 5 14
455 Telecommunications 4 0 6 1 3 14
460 Crop Threshing or Separating 2 1 1 3 7 14
482 Exercise Devices 2 0 4 3 5 14
417 Pumps 0 1 2 6 4 13
033 Geometrical Instruments 1 2 2 3 4 12
037 Excavating 1 2 4 4 1 12
047 Plant Husbandry 1 1 2 1 7 12
123 Internal-Combustion Engines 1 2 2 2 5 12
156 Adhesive Bonding and Miscellaneous Chemical Manufacture 1 3 1 4 3 12
175 Boring or Penetrating the Earth 0 2 3 2 5 12
335 Electricity: Magnetically Operated Switches, Magnets, and Electromagnets 2 3 4 1 2 12
343 Communications: Radio Wave Antennas 2 1 1 3 5 12
356 Optics: Measuring and Testing 3 3 4 1 1 12
403 Joints and Connections 2 4 1 1 4 12
530 Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof 1 3 2 2 4 12
604 Surgery (Medicators and Receptors) 2 2 2 1 5 12
042 Firearms 5 1 2 0 3 11
074 Machine Element or Mechanism 1 4 2 0 4 11
081 Tools 1 1 3 4 2 11
144 Woodworking 4 3 3 1 0 11
160 Flexible or Portable Closure, Partition, or Panel 0 3 4 2 2 11
220 Receptacles 4 2 3 1 1 11
221 Article Dispensing 1 2 2 2 4 11
224 Package and Article Carriers 3 0 2 3 3 11
422 Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing 1 5 2 2 1 11
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 1 1 4 3 2 11
174 Electricity: Conductors and Insulators 1 5 0 1 3 10
211 Supports: Racks 2 3 3 0 2 10
250 Radiant Energy 0 2 3 2 3 10
623 Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor 1 1 3 2 3 10
049 Movable or Removable Closures 1 0 3 1 4 9
070 Locks 2 0 2 1 4 9
091 Motors: Expansible Chamber Type 1 0 2 0 6 9
318 Electricity: Motive Power Systems 1 2 1 2 3 9
405 Hydraulic and Earth Engineering 1 1 3 0 4 9
415 Rotary Kinetic Fluid Motors or Pumps 4 0 3 1 1 9
446 Amusement Devices: Toys 1 0 2 2 4 9
005 Beds 3 2 1 1 1 8
016 Miscellaneous Hardware 1 1 3 3 0 8
099 Foods and Beverages: Apparatus 2 2 2 0 2 8
132 Toilet 0 2 4 1 1 8
148 Metal Treatment 0 4 0 0 4 8
251 Valves and Valve Actuation 1 4 3 0 0 8
298 Land Vehicles: Dumping 2 2 1 2 1 8
360 Dynamic Magnetic Information Storage or Retrieval 2 2 2 2 0 8
365 Static Information Storage and Retrieval 1 1 3 2 1 8
425 Plastic Article or Earthenware Shaping or Treating: Apparatus 2 4 0 0 2 8
436 Chemistry: Analytical and Immunological Testing 2 1 2 2 1 8
707 DP: Database and File Management, Data Structures, Or Document Processing (Data Processing) 3 1 2 1 1 8
713 Support (Electrical Computers and Digital Processing Systems) 0 5 0 1 2 8
100 Presses 1 1 4 1 0 7
177 Weighing Scales 0 2 4 0 1 7
292 Closure Fasteners 1 0 3 2 1 7
348 Television 0 1 4 0 2 7
359 Optics: Systems (Including Communication) and Elements 0 1 4 1 1 7
410 Freight Accommodation On Freight Carrier 2 2 0 2 1 7
427 Coating Processes 0 2 1 2 2 7
429 Chemistry: Electrical Current Producing Apparatus, Product, and Process 1 2 2 0 2 7
439 Electrical Connectors 0 2 0 3 2 7
502 Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making 0 1 2 1 3 7
711 Memory (Electrical Computers and Digital Processing Systems) 1 1 1 3 1 7
002 Apparel 0 2 1 2 1 6
084 Music 0 3 1 2 0 6
108 Horizontally Supported Planar Surfaces 3 2 0 0 1 6
141 Fluent Material Handling, with Receiver or Receiver Coacting Means 0 1 2 2 1 6
198 Conveyors: Power-Driven 1 2 2 1 0 6
249 Static Molds 2 2 1 0 1 6
305 Wheel Substitutes for Land Vehicles 0 2 0 2 2 6
313 Electric Lamp and Discharge Devices 0 4 1 0 1 6
315 Electric Lamp and Discharge Devices: Systems 1 2 2 1 0 6
341 Coded Data Generation or Conversion 0 0 1 1 4 6
423 Chemistry of Inorganic Compounds 1 1 1 0 3 6
602 Surgery: Splint, Brace, or Bandage 1 2 0 2 1 6
710 Input/Output (Electrical Computers and Digital Processing Systems) 1 1 2 1 1 6
015 Brushing, Scrubbing, and General Cleaning 0 3 0 2 0 5
040 Card, Picture, or Sign Exhibiting 0 3 2 0 0 5
053 Package Making 1 1 3 0 0 5
072 Metal Deforming 1 1 1 1 1 5
075 Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures 0 2 1 2 0 5
095 Gas Separation: Processes 1 1 3 0 0 5
184 Lubrication 1 0 1 2 1 5
188 Brakes 1 1 0 2 1 5
192 Clutches and Power-Stop Control 3 0 2 0 0 5
209 Classifying, Separating, and Assorting Solids 2 1 1 0 1 5
212 Traversing Hoists 0 1 3 1 0 5
252 Compositions 3 0 0 2 0 5
273 Amusement Devices: Games 0 1 1 1 2 5
307 Electrical Transmission or Interconnection Systems 2 0 0 2 1 5
310 Electrical Generator or Motor Structure 0 2 0 3 0 5
400 Typewriting Machines 2 2 0 1 0 5
454 Ventilation 0 1 1 1 2 5
463 Amusement Devices: Games 0 2 1 1 1 5
508 Solid Anti-Friction Devices, Materials Therefor, Lubricant or Separate Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions 0 0 2 1 2 5
607 Surgery: Light, Thermal, and Electrical Application 0 1 0 2 2 5
004 Baths, Closets, Sinks, and Spittoons 0 2 1 0 1 4
030 Cutlery 1 1 1 1 0 4
102 Ammunition and Explosives 2 1 0 1 0 4
110 Furnaces 0 2 1 0 1 4
126 Stoves and Furnaces 1 1 1 1 0 4
182 Fire Escape, Ladder, or Scaffold 0 0 1 1 2 4
205 Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions 0 0 2 1 1 4
242 Winding, Tensioning, or Guiding 0 1 1 2 0 4
269 Work Holders 0 1 1 2 0 4
301 Land Vehicles: Wheels and Axles 0 1 1 0 2 4
333 Wave Transmission Lines and Networks 0 0 1 1 2 4
363 Electric Power Conversion Systems 0 0 2 1 1 4
392 Electric Resistance Heating Devices 0 3 0 1 0 4
406 Conveyors: Fluid Current 0 0 2 0 2 4
408 Cutting by Use of Rotating Axially Moving Tool 2 1 0 1 0 4
420 Alloys or Metallic Compositions 2 2 0 0 0 4
433 Dentistry 1 1 0 0 2 4
474 Endless Belt Power Transmission Systems or Components 1 2 0 1 0 4
717 DP: Software Development, Installation, and Management (Data Processing) 0 0 0 3 1 4
082 Turning (e.g., for metal working) 2 1 0 0 0 3
106 Compositions: Coating or Plastic 1 0 0 1 1 3
114 Ships 0 2 0 1 0 3
124 Mechanical Guns and Projectors 1 0 1 1 0 3
127 Sugar, Starch, and Carbohydrates 0 0 1 0 2 3
135 Tent, Canopy, Umbrella, or Cane 1 2 0 0 0 3
138 Pipes and Tubular Conduits 0 1 0 2 0 3
157 Wheelwright Machines 0 0 0 1 2 3
164 Metal Founding 0 0 2 1 0 3
166 Wells (shafts or deep borings in the earth, e.g., for oil and gas) 0 1 0 1 1 3
187 Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle 0 0 2 1 0 3
223 Apparel Apparatus 1 0 1 0 1 3
229 Envelopes, Wrappers, and Paperboard Boxes 1 1 0 0 1 3
266 Metallurgical Apparatus 1 0 0 2 0 3
277 Seal for a Joint or Juncture 1 1 0 0 1 3
285 Pipe Joints or Couplings 1 1 1 0 0 3
323 Electricity: Power Supply or Regulation Systems 1 1 0 0 1 3
327 Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems 0 0 0 3 0 3
330 Amplifiers 0 1 0 0 2 3
331 Oscillators 1 1 1 0 0 3
377 Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems 0 0 1 2 0 3
382 Image Analysis 1 0 1 1 0 3
384 Bearings 1 1 1 0 0 3
385 Optical Waveguides 0 0 2 1 0 3
401 Coating Implements with Material Supply 0 0 1 0 2 3
409 Gear Cutting, Milling, or Planing 0 0 0 1 2 3
418 Rotary Expansible Chamber Devices 0 0 0 2 1 3
438 Semiconductor Device Manufacturing: Process 1 0 0 1 1 3
477 Interrelated Power Delivery Controls, Including Engine Control 0 0 0 2 1 3
493 Manufacturing Container or Tube From Paper; or Other Manufacturing From a Sheet or Web 1 0 0 1 1 3
501 Compositions: Ceramic 0 0 1 0 2 3
504 Plant Protecting and Regulating Compositions 2 0 0 1 0 3
705 DP: Financial, Business Practice, Management, or Cost/Price Determination (Data Processing) 1 0 2 0 0 3
024 Buckles, Buttons, Clasps, Etc. 0 2 0 0 0 2
057 Textiles: Spinning, Twisting, and Twining 0 1 0 1 0 2
071 Chemistry: Fertilizers 0 1 0 1 0 2
083 Cutting 2 0 0 0 0 2
096 Gas Separation: Apparatus 0 1 0 1 0 2
112 Sewing 0 0 0 2 0 2
116 Signals and Indicators 0 0 1 1 0 2
118 Coating Apparatus 0 0 1 1 0 2
162 Paper Making and Fiber Liberation 0 0 1 1 0 2
165 Heat Exchange 1 1 0 0 0 2
215 Bottles and Jars 0 0 0 1 1 2
232 Deposit and Collection Receptacles 0 1 0 1 0 2
237 Heating Systems 0 1 0 0 1 2
244 Aeronautics 0 0 0 2 0 2
246 Railway Switches and Signals 0 0 2 0 0 2
257 Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) 0 1 1 0 0 2
290 Prime-Mover Dynamo Plants 0 1 0 0 1 2
299 Mining or In Situ Disintegration of Hard Material 1 0 0 0 1 2
300 Brush, Broom, and Mop Making 1 0 1 0 0 2
303 Fluid-Pressure and Analogous Brake Systems 0 0 0 0 2 2
373 Industrial Electric Heating Furnaces 0 1 0 1 0 2
374 Thermal Measuring and Testing 0 2 0 0 0 2
381 Electrical Audio Signal Processing Systems and Devices 0 0 0 2 0 2
411 Expanded, Threaded, Driven, Headed, Tool-Deformed, or Locked-Threaded Fastener 0 0 0 2 0 2
419 Powder Metallurgy Processes 0 0 1 0 1 2
431 Combustion 0 0 2 0 0 2
464 Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts 0 1 0 1 0 2
704 DP: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression (Data Processing) 0 0 1 1 0 2
708 Arithmetic Processing and Calculating (Electrical Computers) 0 0 0 1 1 2
712 Processing Architectures and Instruction Processing, e.g., Processors (Electrical Computers and Digital Processing Systems) 1 0 1 0 0 2
714 Error Detection/Correction and Fault Detection/Recovery 0 1 1 0 0 2
725 Interactive Video Distribution Systems 1 0 0 0 1 2
001 ** Classification Undetermined ** 0 1 0 0 0 1
007 Compound Hand Tools 0 1 0 0 0 1
036 Boots, Shoes, and Leggings 0 0 0 0 1 1
048 Gas: Heating and Illuminating 0 1 0 0 0 1
051 Abrasive Tool Making Process, Material, or Composition 0 0 0 1 0 1
059 Chain, Staple, and Horseshoe Making 0 0 1 0 0 1
065 Glass Manufacturing 0 1 0 0 0 1
076 Metal Tools and Implements, Making 1 0 0 0 0 1
089 Ordnance 1 0 0 0 0 1
101 Printing 0 0 1 0 0 1
104 Railways 0 1 0 0 0 1
105 Railway Rolling Stock 0 0 0 0 1 1
122 Liquid Heaters and Vaporizers 0 0 0 1 0 1
150 Purses, Wallets, and Protective Covers 0 0 0 0 1 1
190 Trunks and Hand-Carried Luggage 0 0 0 0 1 1
218 High-Voltage Switches with Arc Preventing or Extinguishing Devices 1 0 0 0 0 1
226 Advancing Material of Indeterminate Length 0 0 0 0 1 1
227 Elongated-Member-Driving Apparatus 0 1 0 0 0 1
228 Metal Fusion Bonding 0 0 1 0 0 1
236 Automatic Temperature and Humidity Regulation 0 1 0 0 0 1
254 Implements or Apparatus for Applying Pushing or Pulling Force 0 0 1 0 0 1
256 Fences 0 0 0 1 0 1
261 Gas and Liquid Contact Apparatus 0 1 0 0 0 1
283 Printed Matter 0 1 0 0 0 1
293 Vehicle Fenders 1 0 0 0 0 1
294 Handling: Hand and Hoist-Line Implements 0 0 0 0 1 1
329 Demodulators 0 0 1 0 0 1
332 Modulators 0 0 1 0 0 1
351 Optics: Eye Examining, Vision Testing and Correcting 0 0 0 0 1 1
353 Optics: Image Projectors 0 0 0 1 0 1
367 Communications, Electrical: Acoustic Wave Systems and Devices 1 0 0 0 0 1
368 Horology: Time Measuring Systems or Devices 0 1 0 0 0 1
369 Dynamic Information Storage or Retrieval 0 0 1 0 0 1
378 X-Ray or Gamma Ray Systems or Devices 0 0 0 1 0 1
380 Cryptography 0 0 1 0 0 1
383 Flexible Bags 0 0 1 0 0 1
396 Photography 0 1 0 0 0 1
402 Binder Device Releasably Engaging Aperture or Notch of Sheet 0 0 0 0 1 1
432 Heating 0 0 1 0 0 1
440 Marine Propulsion 0 0 0 0 1 1
442 Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, Etc.) 1 0 0 0 0 1
445 Electric Lamp or Space Discharge Component or Device Manufacturing 0 0 0 1 0 1
453 Coin Handling 0 0 0 1 0 1
472 Amusement Devices 0 1 0 0 0 1
475 Planetary Gear Transmission Systems or Components 0 0 0 0 1 1
492 Roll or Roller 0 0 0 0 1 1
510 Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions 0 0 0 0 1 1
585 Chemistry of Hydrocarbon Compounds 0 0 1 0 0 1
588 Hazardous or Toxic Waste Destruction or Containment 0 0 0 0 1 1
703 DP: Structural Design, Modeling, Simulation, and Emulation (Data Processing) 0 0 0 1 0 1
ALL ALL CLASSES 398 645 745 589 751 3128



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Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Information Products Division - TAF Branch
PK3- Suite 441
Washington, DC 20231

tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov

address of TAF Internet pages : http://www.uspto.gov/web/offices/ac/ido/oeip/taf/tafp.html
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Last Modified: April 9, 2002