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U.S. PATENT AND TRADEMARK OFFICE
Office of Electronic Information Products
Patent Technology Monitoring Division (PTMD)

Patenting By Geographic Region (State and Country),
Breakout By Technology Class

Count of 1998 - 2002 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 1998 1999 2000 2001 2002 Total
800 Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes 80 91 61 121 46 399
435 Chemistry: Molecular Biology and Microbiology 30 27 13 25 20 115
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 16 24 16 21 21 98
056 Harvesters 18 8 12 14 10 62
052 Static Structures (e.g., Buildings) 12 9 13 14 12 60
172 Earth Working 15 13 7 13 8 56
342 Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) 1 13 10 16 16 56
532 Organic Compounds (includes Classes 532-570) 15 8 9 6 10 48
361 Electricity: Electrical Systems and Devices 7 14 4 6 15 46
701 DP: Vehicles, Navigation, and Relative Location (Data Processing) 2 12 6 13 11 44
280 Land Vehicles 7 6 3 16 10 42
137 Fluid Handling 8 6 10 12 5 41
345 Computer Graphics Processing, Operator Interface Processing, and Selective Visual Display Systems 5 7 6 8 12 38
128 Surgery (includes Class 600) 7 9 7 6 8 37
426 Food or Edible Material: Processes, Compositions, and Products 7 11 6 6 7 37
235 Registers (e.g., cash registers, calculators, devices for counting movements of devices, etc.) 9 14 8 4 1 36
073 Measuring and Testing 6 10 8 8 3 35
241 Solid Material Comminution or Disintegration 5 5 11 4 10 35
414 Material or Article Handling 4 9 7 10 5 35
379 Telephonic Communications 5 8 5 5 10 33
248 Supports (e.g., for holding articles, etc.) 6 7 4 10 5 32
340 Communications: Electrical 6 8 4 9 5 32
473 Games Using Tangible Projectile 10 6 4 6 6 32
119 Animal Husbandry 6 7 5 8 4 30
296 Land Vehicles: Bodies and Tops 5 6 5 9 5 30
370 Multiplex Communications 7 7 4 2 9 29
362 Illumination 5 6 3 6 7 27
210 Liquid Purification or Separation 4 5 5 3 9 26
452 Butchering 4 6 8 7 1 26
111 Planting 2 10 2 7 4 25
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 7 5 5 2 6 25
702 DP: Measuring, Calibrating, or Testing (Data Processing) 3 4 6 4 7 24
008 Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers 4 8 1 6 4 23
068 Textiles: Fluid Treating Apparatus 6 8 3 3 3 23
175 Boring or Penetrating the Earth 2 3 2 5 11 23
180 Motor Vehicles 0 2 3 4 13 22
606 Surgery (instruments) 4 10 3 2 3 22
709 Multiple Computer or Process Coordinating (Electrical Computers and Digital Processing Systems) 4 3 5 5 5 22
062 Refrigeration 5 4 1 7 4 21
375 Pulse or Digital Communications 6 6 3 3 3 21
034 Drying and Gas or Vapor Contact with Solids 4 4 6 3 3 20
060 Power Plants 3 0 5 4 8 20
219 Electric Heating 1 7 7 3 2 20
324 Electricity: Measuring and Testing 1 5 4 6 4 20
428 Stock Material or Miscellaneous Articles 6 3 4 6 1 20
043 Fishing, Trapping, and Vermin Destroying 1 6 7 5 0 19
206 Special Receptacle or Package 6 4 4 4 1 19
312 Supports: Cabinet Structure 2 6 7 1 3 19
482 Exercise Devices 0 4 3 5 7 19
297 Chairs and Seats 5 4 6 3 0 18
092 Expansible Chamber Devices 3 3 2 7 2 17
320 Electricity: Battery or Capacitor Charging or Discharging 2 7 4 4 0 17
700 DP: Generic Control Systems or Specific Applications (Data Processing) 3 2 4 4 4 17
434 Education and Demonstration 6 1 2 6 1 16
200 Electricity: Circuit Makers and Breakers 9 1 0 3 2 15
204 Chemistry: Electrical and Wave Energy 3 6 2 1 3 15
239 Fluid Sprinkling, Spraying, and Diffusing 4 5 5 0 1 15
029 Metal Working 2 3 3 4 2 14
037 Excavating 2 4 4 1 3 14
123 Internal-Combustion Engines 2 2 2 5 3 14
222 Dispensing (apparatus and process) 5 6 1 1 1 14
417 Pumps 1 2 6 4 1 14
530 Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof 3 2 3 4 2 14
343 Communications: Radio Wave Antennas 1 1 3 5 3 13
404 Road Structure, Process, or Apparatus 1 5 6 0 1 13
422 Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing 5 2 2 1 3 13
455 Telecommunications 0 6 1 3 3 13
460 Crop Threshing or Separating 1 1 3 7 1 13
033 Geometrical Instruments 2 2 3 4 1 12
047 Plant Husbandry 1 2 1 7 1 12
081 Tools 1 3 4 2 2 12
156 Adhesive Bonding and Miscellaneous Chemical Manufacture 3 1 4 3 1 12
160 Flexible or Portable Closure, Partition, or Panel 3 4 2 2 1 12
221 Article Dispensing 2 2 2 4 2 12
250 Radiant Energy 2 3 2 3 2 12
348 Television 1 4 0 2 5 12
356 Optics: Measuring and Testing 3 4 1 1 3 12
403 Joints and Connections 4 1 1 4 2 12
604 Surgery (Medicators and Receptors) 2 2 1 5 2 12
710 Input/Output (Electrical Computers and Digital Processing Systems) 1 2 1 1 7 12
016 Miscellaneous Hardware 1 3 3 0 4 11
049 Movable or Removable Closures 0 3 1 4 3 11
074 Machine Element or Mechanism 4 2 0 4 1 11
174 Electricity: Conductors and Insulators 5 0 1 3 2 11
335 Electricity: Magnetically Operated Switches, Magnets, and Electromagnets 3 4 1 2 1 11
341 Coded Data Generation or Conversion 0 1 1 4 5 11
349 Liquid Crystal Cells, Elements and Systems 1 5 1 2 2 11
439 Electrical Connectors 2 0 3 2 4 11
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 1 4 3 2 1 11
198 Conveyors: Power-Driven 2 2 1 0 5 10
211 Supports: Racks 3 3 0 2 2 10
451 Abrading 0 1 4 5 0 10
623 Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor 1 3 2 3 1 10
070 Locks 0 2 1 4 2 9
091 Motors: Expansible Chamber Type 0 2 0 6 1 9
132 Toilet 2 4 1 1 1 9
220 Receptacles 2 3 1 1 2 9
292 Closure Fasteners 0 3 2 1 3 9
318 Electricity: Motive Power Systems 2 1 2 3 1 9
359 Optics: Systems (Including Communication) and Elements 1 4 1 1 2 9
405 Hydraulic and Earth Engineering 1 3 0 4 1 9
607 Surgery: Light, Thermal, and Electrical Application 1 0 2 2 4 9
713 Support (Electrical Computers and Digital Processing Systems) 5 0 1 2 1 9
042 Firearms 1 2 0 3 2 8
099 Foods and Beverages: Apparatus 2 2 0 2 2 8
134 Cleaning and Liquid Contact with Solids 2 3 0 3 0 8
148 Metal Treatment 4 0 0 4 0 8
177 Weighing Scales 2 4 0 1 1 8
224 Package and Article Carriers 0 2 3 3 0 8
365 Static Information Storage and Retrieval 1 3 2 1 1 8
446 Amusement Devices: Toys 0 2 2 4 0 8
707 DP: Database and File Management or Data Structures (Data Processing) 1 1 1 0 5 8
002 Apparel 2 1 2 1 1 7
004 Baths, Closets, Sinks, and Spittoons 2 1 0 1 3 7
015 Brushing, Scrubbing, and General Cleaning 3 0 2 0 2 7
084 Music 3 1 2 0 1 7
095 Gas Separation: Processes 1 3 0 0 3 7
144 Woodworking 3 3 1 0 0 7
251 Valves and Valve Actuation 4 3 0 0 0 7
269 Work Holders 1 1 2 0 3 7
273 Amusement Devices: Games 1 1 1 2 2 7
298 Land Vehicles: Dumping 2 1 2 1 1 7
313 Electric Lamp and Discharge Devices 4 1 0 1 1 7
410 Freight Accommodation On Freight Carrier 2 0 2 1 2 7
427 Coating Processes 2 1 2 2 0 7
429 Chemistry: Electrical Current Producing Apparatus, Product, and Process 2 2 0 2 1 7
502 Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making 1 2 1 3 0 7
602 Surgery: Splint, Brace, or Bandage 2 0 2 1 2 7
717 DP: Software Development, Installation, and Management (Data Processing) 0 0 3 2 2 7
005 Beds 2 1 1 1 1 6
040 Card, Picture, or Sign Exhibiting 3 2 0 0 1 6
072 Metal Deforming 1 1 1 1 2 6
100 Presses 1 4 1 0 0 6
141 Fluent Material Handling, with Receiver or Receiver Coacting Means 1 2 2 1 0 6
164 Metal Founding 0 2 1 0 3 6
184 Lubrication 0 1 2 1 2 6
209 Classifying, Separating, and Assorting Solids 1 1 0 1 3 6
305 Wheel Substitutes for Land Vehicles 2 0 2 2 0 6
310 Electrical Generator or Motor Structure 2 0 3 0 1 6
315 Electric Lamp and Discharge Devices: Systems 2 2 1 0 1 6
360 Dynamic Magnetic Information Storage or Retrieval 2 2 2 0 0 6
366 Agitating (e.g., of articles and materials) 3 2 1 0 0 6
415 Rotary Kinetic Fluid Motors or Pumps 0 3 1 1 1 6
425 Plastic Article or Earthenware Shaping or Treating: Apparatus 4 0 0 2 0 6
436 Chemistry: Analytical and Immunological Testing 1 2 2 1 0 6
454 Ventilation 1 1 1 2 1 6
508 Solid Anti-Friction Devices, Materials Therefor, Lubricant or Separate Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions 0 2 1 2 1 6
711 Memory (Electrical Computers and Digital Processing Systems) 1 1 3 1 0 6
075 Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures 2 1 2 0 0 5
114 Ships 2 0 1 0 2 5
182 Fire Escape, Ladder, or Scaffold 0 1 1 2 1 5
205 Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions 0 2 1 1 1 5
212 Traversing Hoists 1 3 1 0 0 5
242 Winding, Tensioning, or Guiding 1 1 2 0 1 5
330 Amplifiers 1 0 0 2 2 5
331 Oscillators 1 1 0 0 3 5
382 Image Analysis 0 1 1 0 3 5
408 Cutting by Use of Rotating Axially Moving Tool 1 0 1 0 3 5
423 Chemistry of Inorganic Compounds 1 1 0 3 0 5
463 Amusement Devices: Games 2 1 1 1 0 5
053 Package Making 1 3 0 0 0 4
101 Printing 0 1 0 0 3 4
106 Compositions: Coating or Plastic 0 0 1 1 2 4
108 Horizontally Supported Planar Surfaces 2 0 0 1 1 4
110 Furnaces 2 1 0 1 0 4
127 Sugar, Starch, and Carbohydrates 0 1 0 2 1 4
162 Paper Making and Fiber Liberation 0 1 1 0 2 4
188 Brakes 1 0 2 1 0 4
229 Envelopes, Wrappers, and Paperboard Boxes 1 0 0 1 2 4
249 Static Molds 2 1 0 1 0 4
300 Brush, Broom, and Mop Making 0 1 0 0 3 4
301 Land Vehicles: Wheels and Axles 1 1 0 2 0 4
307 Electrical Transmission or Interconnection Systems 0 0 2 1 1 4
327 Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems 0 0 3 0 1 4
333 Wave Transmission Lines and Networks 0 1 1 2 0 4
363 Electric Power Conversion Systems 0 2 1 1 0 4
392 Electric Resistance Heating Devices 3 0 1 0 0 4
401 Coating Implements with Material Supply 0 1 0 2 1 4
406 Conveyors: Fluid Current 0 2 0 2 0 4
409 Gear Cutting, Milling, or Planing 0 0 1 2 1 4
418 Rotary Expansible Chamber Devices 0 0 2 1 1 4
433 Dentistry 1 0 0 2 1 4
438 Semiconductor Device Manufacturing: Process 0 0 1 1 2 4
475 Planetary Gear Transmission Systems or Components 0 0 0 1 3 4
501 Compositions: Ceramic 0 1 0 2 1 4
705 DP: Financial, Business Practice, Management, or Cost/Price Determination (Data Processing) 0 2 0 0 2 4
024 Buckles, Buttons, Clasps, Etc. 2 0 0 0 1 3
030 Cutlery 1 1 1 0 0 3
036 Boots, Shoes, and Leggings 0 0 0 1 2 3
071 Chemistry: Fertilizers 1 0 1 0 1 3
096 Gas Separation: Apparatus 1 0 1 0 1 3
112 Sewing 0 0 2 0 1 3
124 Mechanical Guns and Projectors 0 1 1 0 1 3
126 Stoves and Furnaces 1 1 1 0 0 3
138 Pipes and Tubular Conduits 1 0 2 0 0 3
157 Wheelwright Machines 0 0 1 2 0 3
166 Wells (shafts or deep borings in the earth, e.g., for oil and gas) 1 0 1 1 0 3
187 Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle 0 2 1 0 0 3
236 Automatic Temperature and Humidity Regulation 1 0 0 0 2 3
244 Aeronautics 0 0 2 0 1 3
246 Railway Switches and Signals 0 2 0 0 1 3
252 Compositions 0 0 2 0 1 3
256 Fences 0 0 1 0 2 3
266 Metallurgical Apparatus 0 0 2 0 1 3
277 Seal for a Joint or Juncture 1 0 0 1 1 3
294 Handling: Hand and Hoist-Line Implements 0 0 0 1 2 3
303 Fluid-Pressure and Analogous Brake Systems 0 0 0 2 1 3
377 Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems 0 1 2 0 0 3
381 Electrical Audio Signal Processing Systems and Devices 0 0 2 0 1 3
385 Optical Waveguides 0 2 1 0 0 3
400 Typewriting Machines 2 0 1 0 0 3
411 Expanded, Threaded, Driven, Headed, Tool-Deformed, or Locked-Threaded Fastener 0 0 2 0 1 3
474 Endless Belt Power Transmission Systems or Components 2 0 1 0 0 3
477 Interrelated Power Delivery Controls, Including Engine Control 0 0 2 1 0 3
704 DP: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression (Data Processing) 0 1 1 0 1 3
057 Textiles: Spinning, Twisting, and Twining 1 0 1 0 0 2
102 Ammunition and Explosives 1 0 1 0 0 2
116 Signals and Indicators 0 1 1 0 0 2
118 Coating Apparatus 0 1 1 0 0 2
135 Tent, Canopy, Umbrella, or Cane 2 0 0 0 0 2
192 Clutches and Power-Stop Control 0 2 0 0 0 2
215 Bottles and Jars 0 0 1 1 0 2
223 Apparel Apparatus 0 1 0 1 0 2
226 Advancing Material of Indeterminate Length 0 0 0 1 1 2
228 Metal Fusion Bonding 0 1 0 0 1 2
232 Deposit and Collection Receptacles 1 0 1 0 0 2
237 Heating Systems 1 0 0 1 0 2
257 Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) 1 1 0 0 0 2
267 Spring Devices 0 0 0 0 2 2
285 Pipe Joints or Couplings 1 1 0 0 0 2
290 Prime-Mover Dynamo Plants 1 0 0 1 0 2
323 Electricity: Power Supply or Regulation Systems 1 0 0 1 0 2
353 Optics: Image Projectors 0 0 1 0 1 2
373 Industrial Electric Heating Furnaces 1 0 1 0 0 2
374 Thermal Measuring and Testing 2 0 0 0 0 2
384 Bearings 1 1 0 0 0 2
419 Powder Metallurgy Processes 0 1 0 1 0 2
420 Alloys or Metallic Compositions 2 0 0 0 0 2
431 Combustion 0 2 0 0 0 2
440 Marine Propulsion 0 0 0 1 1 2
464 Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts 1 0 1 0 0 2
493 Manufacturing Container or Tube From Paper; or Other Manufacturing From a Sheet or Web 0 0 1 1 0 2
510 Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions 0 0 0 1 1 2
708 Arithmetic Processing and Calculating (Electrical Computers) 0 0 1 1 0 2
714 Error Detection/Correction and Fault Detection/Recovery 1 1 0 0 0 2
725 Interactive Video Distribution Systems 0 0 0 1 1 2
001 ** Classification Undetermined ** 1 0 0 0 0 1
007 Compound Hand Tools 1 0 0 0 0 1
048 Gas: Heating and Illuminating 1 0 0 0 0 1
051 Abrasive Tool Making Process, Material, or Composition 0 0 1 0 0 1
059 Chain, Staple, and Horseshoe Making 0 1 0 0 0 1
065 Glass Manufacturing 1 0 0 0 0 1
082 Turning (e.g., for metal working) 1 0 0 0 0 1
104 Railways 1 0 0 0 0 1
105 Railway Rolling Stock 0 0 0 1 0 1
122 Liquid Heaters and Vaporizers 0 0 1 0 0 1
150 Purses, Wallets, and Protective Covers 0 0 0 1 0 1
165 Heat Exchange 1 0 0 0 0 1
173 Tool Driving or Impacting 0 0 0 0 1 1
181 Acoustics 0 0 0 0 1 1
190 Trunks and Hand-Carried Luggage 0 0 0 1 0 1
218 High-Voltage Switches with Arc Preventing or Extinguishing Devices 0 0 0 0 1 1
227 Elongated-Member-Driving Apparatus 1 0 0 0 0 1
254 Implements or Apparatus for Applying Pushing or Pulling Force 0 1 0 0 0 1
261 Gas and Liquid Contact Apparatus 1 0 0 0 0 1
279 Chucks or Sockets 0 0 0 0 1 1
283 Printed Matter 1 0 0 0 0 1
299 Mining or In Situ Disintegration of Hard Material 0 0 0 1 0 1
326 Electronic Digital Logic Circuitry 0 0 0 0 1 1
329 Demodulators 0 1 0 0 0 1
332 Modulators 0 1 0 0 0 1
351 Optics: Eye Examining, Vision Testing and Correcting 0 0 0 1 0 1
368 Horology: Time Measuring Systems or Devices 1 0 0 0 0 1
369 Dynamic Information Storage or Retrieval 0 1 0 0 0 1
378 X-Ray or Gamma Ray Systems or Devices 0 0 1 0 0 1
380 Cryptography 0 1 0 0 0 1
383 Flexible Bags 0 1 0 0 0 1
386 Television Signal Processing for Dynamic Recording or Reproducing 0 0 0 0 1 1
396 Photography 1 0 0 0 0 1
402 Binder Device Releasably Engaging Aperture or Notch of Sheet 0 0 0 1 0 1
432 Heating 0 1 0 0 0 1
453 Coin Handling 0 0 1 0 0 1
462 Books, Strips, and Leaves for Manifolding 0 0 0 0 1 1
472 Amusement Devices 1 0 0 0 0 1
492 Roll or Roller 0 0 0 1 0 1
504 Plant Protecting and Regulating Compositions 0 0 1 0 0 1
585 Chemistry of Hydrocarbon Compounds 0 1 0 0 0 1
588 Hazardous or Toxic Waste Destruction or Containment 0 0 0 1 0 1
703 DP: Structural Design, Modeling, Simulation, and Emulation (Data Processing) 0 0 1 0 0 1
712 Processing Architectures and Instruction Processing, e.g., Processors (Electrical Computers and Digital Processing Systems) 0 1 0 0 0 1
715 DP: Presentation Processing of Document (Data Processing) 0 1 0 0 0 1
ALL ALL CLASSES 645 745 588 751 630 3359


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