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 1996 - 2000 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 1996 1997 1998 1999 2000 Total
800 Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes 30 25 80 91 61 287
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 16 11 16 24 16 83
435 Chemistry: Molecular Biology and Microbiology 5 6 30 27 14 82
172 Earth Working 11 10 15 13 7 56
056 Harvesters 8 5 18 8 12 51
532 Organic Compounds (includes Classes 532-570) 6 13 15 8 9 51
235 Registers (e.g., cash registers, calculators, devices for counting movements of devices, etc.) 11 6 9 14 8 48
052 Static Structures (e.g., Buildings) 5 7 12 9 13 46
073 Measuring and Testing 5 9 6 10 8 38
414 Material or Article Handling 7 10 4 9 7 37
361 Electricity: Electrical Systems and Devices 5 3 7 14 4 33
379 Telephonic Communications 6 8 5 8 5 32
128 Surgery (includes Class 600) 3 5 7 9 7 31
137 Fluid Handling 2 4 8 6 10 30
426 Food or Edible Material: Processes, Compositions, and Products 3 1 7 11 6 28
241 Solid Material Comminution or Disintegration 3 3 5 5 11 27
473 Games Using Tangible Projectile 4 3 10 6 4 27
701 DP: Vehicles, Navigation, and Relative Location (Data Processing) 4 3 2 12 6 27
119 Animal Husbandry 3 5 6 7 5 26
248 Supports (e.g., for holding articles, etc.) 3 6 6 7 4 26
280 Land Vehicles 8 2 7 6 3 26
034 Drying and Gas or Vapor Contact with Solids 7 4 4 4 6 25
342 Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) 1 0 1 13 10 25
345 Computer Graphics Processing, Operator Interface Processing, and Selective Visual Display Systems 3 3 5 8 6 25
370 Multiplex Communications 2 5 7 7 4 25
111 Planting 7 3 2 10 2 24
340 Communications: Electrical 1 5 6 8 4 24
452 Butchering 3 3 4 6 8 24
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 3 2 7 5 5 22
362 Illumination 4 4 5 6 3 22
297 Chairs and Seats 5 0 5 4 6 20
375 Pulse or Digital Communications 4 1 6 6 3 20
428 Stock Material or Miscellaneous Articles 5 2 6 3 4 20
068 Textiles: Fluid Treating Apparatus 1 1 6 8 3 19
200 Electricity: Circuit Makers and Breakers 6 3 9 1 0 19
210 Liquid Purification or Separation 3 2 4 5 5 19
239 Fluid Sprinkling, Spraying, and Diffusing 2 3 4 5 5 19
296 Land Vehicles: Bodies and Tops 1 2 5 6 5 19
320 Electricity: Battery or Capacitor Charging or Discharging 3 3 2 7 4 19
455 Telecommunications 8 4 0 6 1 19
606 Surgery (instruments) 2 0 4 10 3 19
312 Supports: Cabinet Structure 3 0 2 6 7 18
043 Fishing, Trapping, and Vermin Destroying 3 0 1 6 7 17
219 Electric Heating 2 0 1 7 7 17
222 Dispensing (apparatus and process) 2 3 5 6 1 17
366 Agitating (e.g., of articles and materials) 3 8 3 2 1 17
700 DP: Generic Control Systems or Specific Applications (Data Processing) 4 4 3 2 4 17
702 DP: Measuring, Calibrating, or Testing (Data Processing) 3 1 3 4 6 17
180 Motor Vehicles 6 5 0 2 3 16
204 Chemistry: Electrical and Wave Energy 3 2 3 6 2 16
343 Communications: Radio Wave Antennas 9 2 1 1 3 16
404 Road Structure, Process, or Apparatus 2 2 1 5 6 16
029 Metal Working 4 3 2 3 3 15
709 Multiple Computer or Process Coordinating (Electrical Computers and Digital Processing Systems) 1 2 4 3 5 15
008 Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers 0 1 4 8 1 14
060 Power Plants 4 2 3 0 5 14
206 Special Receptacle or Package 0 0 6 4 4 14
335 Electricity: Magnetically Operated Switches, Magnets, and Electromagnets 4 2 3 4 1 14
417 Pumps 5 0 1 2 6 14
037 Excavating 2 1 2 4 4 13
356 Optics: Measuring and Testing 2 3 3 4 1 13
062 Refrigeration 1 1 5 4 1 12
144 Woodworking 1 4 3 3 1 12
220 Receptacles 2 4 2 3 1 12
224 Package and Article Carriers 4 3 0 2 3 12
324 Electricity: Measuring and Testing 1 1 1 5 4 12
349 Liquid Crystal Cells, Elements and Systems 0 5 1 5 1 12
434 Education and Demonstration 1 2 6 1 2 12
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 3 1 1 4 3 12
134 Cleaning and Liquid Contact with Solids 0 6 2 3 0 11
251 Valves and Valve Actuation 3 1 4 3 0 11
360 Dynamic Magnetic Information Storage or Retrieval 3 2 2 2 2 11
482 Exercise Devices 2 2 0 4 3 11
033 Geometrical Instruments 1 1 2 3 3 10
081 Tools 1 1 1 3 4 10
123 Internal-Combustion Engines 3 1 2 2 2 10
156 Adhesive Bonding and Miscellaneous Chemical Manufacture 1 1 3 1 4 10
211 Supports: Racks 2 2 3 3 0 10
221 Article Dispensing 3 1 2 2 2 10
250 Radiant Energy 3 0 2 3 2 10
403 Joints and Connections 2 2 4 1 1 10
422 Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing 0 1 5 2 2 10
451 Abrading 1 4 0 1 4 10
460 Crop Threshing or Separating 3 2 1 1 3 10
604 Surgery (Medicators and Receptors) 3 2 2 2 1 10
092 Expansible Chamber Devices 1 0 3 3 2 9
415 Rotary Kinetic Fluid Motors or Pumps 1 4 0 3 1 9
436 Chemistry: Analytical and Immunological Testing 2 2 1 2 2 9
016 Miscellaneous Hardware 0 1 1 3 3 8
042 Firearms 1 5 1 1 0 8
100 Presses 1 1 1 4 1 8
132 Toilet 1 0 2 4 1 8
160 Flexible or Portable Closure, Partition, or Panel 0 0 3 3 2 8
315 Electric Lamp and Discharge Devices: Systems 2 1 2 2 1 8
425 Plastic Article or Earthenware Shaping or Treating: Apparatus 2 2 4 0 0 8
530 Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof 0 1 3 2 2 8
623 Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor 1 1 1 3 2 8
713 Support (Electrical Computers and Digital Processing Systems) 2 0 5 0 1 8
002 Apparel 2 0 2 1 2 7
005 Beds 0 3 2 1 1 7
015 Brushing, Scrubbing, and General Cleaning 2 0 3 0 2 7
074 Machine Element or Mechanism 0 1 4 2 0 7
099 Foods and Beverages: Apparatus 1 2 2 2 0 7
108 Horizontally Supported Planar Surfaces 2 3 2 0 0 7
174 Electricity: Conductors and Insulators 0 1 5 0 1 7
175 Boring or Penetrating the Earth 0 0 2 3 2 7
198 Conveyors: Power-Driven 1 1 2 2 1 7
292 Closure Fasteners 1 1 0 3 2 7
298 Land Vehicles: Dumping 0 2 2 1 2 7
318 Electricity: Motive Power Systems 1 1 2 1 2 7
365 Static Information Storage and Retrieval 0 1 1 3 2 7
429 Chemistry: Electrical Current Producing Apparatus, Product, and Process 2 1 2 2 0 7
707 DP: Database and File Management, Data Structures, Or Document Processing (Data Processing) 1 3 1 1 1 7
711 Memory (Electrical Computers and Digital Processing Systems) 1 1 1 1 3 7
047 Plant Husbandry 1 1 1 2 1 6
084 Music 0 0 3 1 2 6
126 Stoves and Furnaces 2 1 1 1 1 6
177 Weighing Scales 0 0 2 4 0 6
188 Brakes 2 1 1 0 2 6
192 Clutches and Power-Stop Control 1 3 0 2 0 6
273 Amusement Devices: Games 3 0 1 1 1 6
310 Electrical Generator or Motor Structure 1 0 2 0 3 6
313 Electric Lamp and Discharge Devices 1 0 4 1 0 6
359 Optics: Systems (Including Communication) and Elements 0 0 1 4 1 6
405 Hydraulic and Earth Engineering 1 1 1 3 0 6
410 Freight Accommodation On Freight Carrier 0 2 2 0 2 6
427 Coating Processes 1 0 2 1 2 6
439 Electrical Connectors 1 0 2 0 3 6
446 Amusement Devices: Toys 1 1 0 2 2 6
602 Surgery: Splint, Brace, or Bandage 1 1 2 0 2 6
040 Card, Picture, or Sign Exhibiting 0 0 3 2 0 5
049 Movable or Removable Closures 0 1 0 3 1 5
053 Package Making 0 1 1 3 0 5
070 Locks 0 2 0 2 1 5
075 Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures 0 0 2 1 2 5
095 Gas Separation: Processes 0 1 1 3 0 5
141 Fluent Material Handling, with Receiver or Receiver Coacting Means 0 0 1 2 2 5
148 Metal Treatment 1 0 4 0 0 5
182 Fire Escape, Ladder, or Scaffold 3 0 0 1 1 5
209 Classifying, Separating, and Assorting Solids 1 2 1 1 0 5
212 Traversing Hoists 0 0 1 3 1 5
249 Static Molds 0 2 2 1 0 5
252 Compositions 0 3 0 0 2 5
307 Electrical Transmission or Interconnection Systems 1 2 0 0 2 5
327 Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems 2 0 0 0 3 5
348 Television 0 0 1 4 0 5
384 Bearings 2 1 1 1 0 5
400 Typewriting Machines 0 2 2 0 1 5
420 Alloys or Metallic Compositions 1 2 2 0 0 5
463 Amusement Devices: Games 1 0 2 1 1 5
504 Plant Protecting and Regulating Compositions 2 2 0 0 1 5
710 Input/Output (Electrical Computers and Digital Processing Systems) 0 1 1 2 1 5
004 Baths, Closets, Sinks, and Spittoons 1 0 2 1 0 4
030 Cutlery 0 1 1 1 1 4
072 Metal Deforming 0 1 1 1 1 4
083 Cutting 2 2 0 0 0 4
091 Motors: Expansible Chamber Type 1 1 0 2 0 4
102 Ammunition and Explosives 0 2 1 0 1 4
110 Furnaces 1 0 2 1 0 4
114 Ships 1 0 2 0 1 4
118 Coating Apparatus 2 0 0 1 1 4
184 Lubrication 0 1 0 1 2 4
218 High-Voltage Switches with Arc Preventing or Extinguishing Devices 3 1 0 0 0 4
242 Winding, Tensioning, or Guiding 0 0 1 1 2 4
246 Railway Switches and Signals 2 0 0 2 0 4
254 Implements or Apparatus for Applying Pushing or Pulling Force 3 0 0 1 0 4
269 Work Holders 0 0 1 1 2 4
285 Pipe Joints or Couplings 1 1 1 1 0 4
305 Wheel Substitutes for Land Vehicles 0 0 2 0 2 4
363 Electric Power Conversion Systems 1 0 0 2 1 4
385 Optical Waveguides 1 0 0 2 1 4
392 Electric Resistance Heating Devices 0 0 3 0 1 4
408 Cutting by Use of Rotating Axially Moving Tool 0 2 1 0 1 4
423 Chemistry of Inorganic Compounds 1 1 1 1 0 4
454 Ventilation 1 0 1 1 1 4
474 Endless Belt Power Transmission Systems or Components 0 1 2 0 1 4
502 Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making 0 0 1 2 1 4
024 Buckles, Buttons, Clasps, Etc. 1 0 2 0 0 3
044 Fuel and Related Compositions 3 0 0 0 0 3
071 Chemistry: Fertilizers 1 0 1 0 1 3
082 Turning (e.g., for metal working) 0 2 1 0 0 3
096 Gas Separation: Apparatus 1 0 1 0 1 3
124 Mechanical Guns and Projectors 0 1 0 1 1 3
127 Sugar, Starch, and Carbohydrates 2 0 0 1 0 3
135 Tent, Canopy, Umbrella, or Cane 0 1 2 0 0 3
138 Pipes and Tubular Conduits 0 0 1 0 2 3
164 Metal Founding 0 0 0 2 1 3
187 Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle 0 0 0 2 1 3
205 Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions 0 0 0 2 1 3
229 Envelopes, Wrappers, and Paperboard Boxes 1 1 1 0 0 3
266 Metallurgical Apparatus 0 1 0 0 2 3
277 Seal for a Joint or Juncture 1 1 1 0 0 3
323 Electricity: Power Supply or Regulation Systems 1 1 1 0 0 3
331 Oscillators 0 1 1 1 0 3
377 Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems 0 0 0 1 2 3
382 Image Analysis 0 1 0 1 1 3
411 Expanded, Threaded, Driven, Headed, Tool-Deformed, or Locked-Threaded Fastener 1 0 0 0 2 3
493 Manufacturing Container or Tube From Paper; or Other Manufacturing From a Sheet or Web 1 1 0 0 1 3
508 Solid Anti-Friction Devices, Materials Therefor, Lubricant or Separate Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions 0 0 0 2 1 3
607 Surgery: Light, Thermal, and Electrical Application 0 0 1 0 2 3
705 DP: Financial, Business Practice, Management, or Cost/Price Determination (Data Processing) 0 1 0 2 0 3
714 Error Detection/Correction and Fault Detection/Recovery 1 0 1 1 0 3
717 DP: Software Development, Installation, and Management (Data Processing) 0 0 0 0 3 3
001 ** Classification Undetermined ** 0 0 1 1 0 2
048 Gas: Heating and Illuminating 1 0 1 0 0 2
057 Textiles: Spinning, Twisting, and Twining 0 0 1 0 1 2
076 Metal Tools and Implements, Making 1 1 0 0 0 2
104 Railways 1 0 1 0 0 2
106 Compositions: Coating or Plastic 0 1 0 0 1 2
112 Sewing 0 0 0 0 2 2
116 Signals and Indicators 0 0 0 1 1 2
162 Paper Making and Fiber Liberation 0 0 0 1 1 2
165 Heat Exchange 0 1 1 0 0 2
166 Wells (shafts or deep borings in the earth, e.g., for oil and gas) 0 0 1 0 1 2
223 Apparel Apparatus 0 1 0 1 0 2
232 Deposit and Collection Receptacles 0 0 1 0 1 2
244 Aeronautics 0 0 0 0 2 2
256 Fences 1 0 0 0 1 2
257 Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) 0 0 1 1 0 2
283 Printed Matter 1 0 1 0 0 2
290 Prime-Mover Dynamo Plants 1 0 1 0 0 2
294 Handling: Hand and Hoist-Line Implements 2 0 0 0 0 2
300 Brush, Broom, and Mop Making 0 1 0 1 0 2
301 Land Vehicles: Wheels and Axles 0 0 1 1 0 2
330 Amplifiers 1 0 1 0 0 2
333 Wave Transmission Lines and Networks 0 0 0 1 1 2
341 Coded Data Generation or Conversion 0 0 0 1 1 2
373 Industrial Electric Heating Furnaces 0 0 1 0 1 2
374 Thermal Measuring and Testing 0 0 2 0 0 2
378 X-Ray or Gamma Ray Systems or Devices 1 0 0 0 1 2
381 Electrical Audio Signal Processing Systems and Devices 0 0 0 0 2 2
406 Conveyors: Fluid Current 0 0 0 2 0 2
418 Rotary Expansible Chamber Devices 0 0 0 0 2 2
419 Powder Metallurgy Processes 1 0 0 1 0 2
431 Combustion 0 0 0 2 0 2
433 Dentistry 0 1 1 0 0 2
438 Semiconductor Device Manufacturing: Process 0 1 0 0 1 2
464 Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts 0 0 1 0 1 2
477 Interrelated Power Delivery Controls, Including Engine Control 0 0 0 0 2 2
704 DP: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression (Data Processing) 0 0 0 1 1 2
712 Processing Architectures and Instruction Processing, e.g., Processors (Electrical Computers and Digital Processing Systems) 0 1 0 1 0 2
007 Compound Hand Tools 0 0 1 0 0 1
051 Abrasive Tool Making Process, Material, or Composition 0 0 0 0 1 1
059 Chain, Staple, and Horseshoe Making 0 0 0 1 0 1
065 Glass Manufacturing 0 0 1 0 0 1
089 Ordnance 0 1 0 0 0 1
101 Printing 0 0 0 1 0 1
122 Liquid Heaters and Vaporizers 0 0 0 0 1 1
157 Wheelwright Machines 0 0 0 0 1 1
169 Fire Extinguishers 1 0 0 0 0 1
178 Telegraphy 1 0 0 0 0 1
215 Bottles and Jars 0 0 0 0 1 1
227 Elongated-Member-Driving Apparatus 0 0 1 0 0 1
228 Metal Fusion Bonding 0 0 0 1 0 1
236 Automatic Temperature and Humidity Regulation 0 0 1 0 0 1
237 Heating Systems 0 0 1 0 0 1
261 Gas and Liquid Contact Apparatus 0 0 1 0 0 1
270 Sheet-Material Associating 1 0 0 0 0 1
293 Vehicle Fenders 0 1 0 0 0 1
299 Mining or In Situ Disintegration of Hard Material 0 1 0 0 0 1
329 Demodulators 0 0 0 1 0 1
332 Modulators 0 0 0 1 0 1
353 Optics: Image Projectors 0 0 0 0 1 1
367 Communications, Electrical: Acoustic Wave Systems and Devices 0 1 0 0 0 1
368 Horology: Time Measuring Systems or Devices 0 0 1 0 0 1
369 Dynamic Information Storage or Retrieval 0 0 0 1 0 1
380 Cryptography 0 0 0 1 0 1
383 Flexible Bags 0 0 0 1 0 1
396 Photography 0 0 1 0 0 1
401 Coating Implements with Material Supply 0 0 0 1 0 1
409 Gear Cutting, Milling, or Planing 0 0 0 0 1 1
432 Heating 0 0 0 1 0 1
442 Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, Etc.) 0 1 0 0 0 1
445 Electric Lamp or Space Discharge Component or Device Manufacturing 0 0 0 0 1 1
453 Coin Handling 0 0 0 0 1 1
472 Amusement Devices 0 0 1 0 0 1
501 Compositions: Ceramic 0 0 0 1 0 1
585 Chemistry of Hydrocarbon Compounds 0 0 0 1 0 1
703 DP: Structural Design, Modeling, Simulation, and Emulation (Data Processing) 0 0 0 0 1 1
708 Arithmetic Processing and Calculating (Electrical Computers) 0 0 0 0 1 1
725 Interactive Video Distribution Systems 0 1 0 0 0 1
ALL ALL CLASSES 432 398 645 745 589 2809



TAF Contacts

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
ftp download of TAF reports from : ftp.uspto.gov/pub/taf/

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Last Modified: April 30, 2001