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U.S. PATENT AND TRADEMARK OFFICE
Electronic Information Products Division
Patent Technology Monitoring Team (PTMT)

U.S. Government
Utility Patent Grants,
Calendar Years 1969-2004

- this report has been prepared with support from the National Science Foundation -

BREAKOUT BY TECHNOLOGY CLASS -
PATENTS DISTRIBUTED BY CALENDAR YEAR OF PATENT APPLICATION

NUMBER OF UTILITY PATENTS ASSIGNED ANNUALLY TO
U.S. GOVERNMENT ENTITIES

- Explanation of Data -

Rank Ordered Listing of Technology Classes Receiving 1 or More Utility Patents During the Period

This Table Displays Patent Counts By Technology Class
For Patents Granted To The Following U.S. Government Entity:

UNITED STATES OF AMERICA, NAVY

( count of patent grants, as distributed by calendar year of patent application )
( technology class is determined by the primary patent classification - see 'Explanation of Data' )

This table displays annual patent counts for the selected U.S. Government entry.
Counts of granted patents are either distributed by the year of patent grant
or by the year of patent filing.
Class Class Title PRE_1984 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Total
367 Communications, Electrical: Acoustic Wave Systems and Devices 553 7 6 4 5 8 10 21 16 23 24 22 27 29 31 24 26 19 26 22 13 0 916
102 Ammunition and Explosives 569 7 7 4 4 2 6 8 10 9 9 3 6 5 9 16 9 17 10 14 5 0 729
342 Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) 544 3 3 3 0 5 10 7 11 17 14 7 9 5 1 7 5 5 6 11 3 0 676
114 Ships 262 2 2 0 0 5 4 10 6 19 15 17 26 26 17 13 15 15 18 22 6 0 500
073 Measuring and Testing 294 6 4 4 1 4 1 12 12 8 11 11 11 15 15 17 13 9 17 14 1 0 480
244 Aeronautics 263 11 7 1 3 3 3 12 7 8 6 5 5 2 5 4 1 12 6 6 5 0 375
250 Radiant Energy 193 2 5 0 1 6 9 17 6 9 9 8 8 6 8 9 5 5 10 4 1 0 321
324 Electricity: Measuring and Testing 183 9 5 1 0 2 5 15 10 9 7 3 9 4 9 5 3 14 9 5 2 0 309
089 Ordnance 166 5 6 0 1 2 6 14 10 8 6 5 4 8 8 13 8 10 8 7 5 0 300
532 Organic Compounds (includes Classes 532-570) 206 9 5 0 6 4 6 4 6 7 12 0 3 1 2 0 0 5 6 4 2 0 288
356 Optics: Measuring and Testing 142 4 2 3 3 7 7 7 9 14 6 6 9 9 11 7 1 4 5 2 1 0 259
327 Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems 234 0 0 0 0 1 3 1 2 5 0 0 5 1 2 0 0 1 1 0 0 0 256
343 Communications: Radio Wave Antennas 162 3 4 3 3 3 0 3 0 1 3 6 5 3 7 6 12 9 7 15 0 0 255
372 Coherent Light Generators 138 10 2 1 3 1 8 15 12 12 14 9 9 4 2 2 2 1 4 0 2 0 251
149 Explosive and Thermic Compositions or Charges 186 4 3 2 1 0 1 1 4 2 1 2 0 6 4 3 3 11 6 5 4 0 249
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 112 3 6 2 3 6 6 12 11 19 7 7 5 8 7 5 3 2 2 7 1 0 234
385 Optical Waveguides 87 1 5 1 0 4 5 9 6 10 9 11 12 8 6 10 9 7 10 3 0 0 213
359 Optics: Systems and Elements 116 4 2 2 6 8 0 6 4 4 5 5 8 4 7 2 2 8 8 4 1 0 206
348 Television 131 5 3 0 0 1 1 2 1 3 2 2 0 1 2 1 0 2 0 0 0 0 157
060 Power Plants 108 0 0 2 0 2 2 4 1 1 7 2 0 0 1 0 2 5 5 5 1 0 148
333 Wave Transmission Lines and Networks 108 1 6 2 1 5 4 2 0 0 3 3 0 0 2 2 1 1 1 0 0 0 142
434 Education and Demonstration 110 1 0 1 0 2 4 3 3 1 2 2 1 0 5 1 1 0 4 0 0 0 141
708 Arithmetic Processing and Calculating (Electrical Computers) 110 5 2 1 1 2 1 1 3 2 2 3 1 2 2 0 1 0 0 0 0 0 139
428 Stock Material or Miscellaneous Articles 42 2 4 2 0 5 1 6 5 5 10 7 9 7 9 5 6 4 3 1 0 0 133
438 Semiconductor Device Manufacturing: Process 45 1 4 1 0 3 6 7 3 6 8 5 4 5 2 9 5 1 9 5 1 0 130
310 Electrical Generator or Motor Structure 72 3 3 0 1 1 2 2 2 2 5 3 4 2 4 2 2 4 4 5 2 0 125
340 Communications: Electrical 77 0 1 0 1 4 2 0 5 0 4 6 1 5 3 2 3 1 3 4 1 0 123
257 Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) 33 0 0 1 3 6 2 6 8 2 5 6 4 3 6 10 3 4 1 10 1 0 114
137 Fluid Handling 80 0 0 0 1 0 1 1 4 1 2 3 1 4 2 3 1 2 0 0 1 0 107
315 Electric Lamp and Discharge Devices: Systems 80 4 1 1 1 1 1 2 2 1 3 1 2 3 2 0 0 0 0 0 0 0 105
427 Coating Processes 33 5 8 1 1 1 2 4 5 3 4 6 5 2 10 2 2 2 3 4 1 0 104
375 Pulse or Digital Communications 47 2 0 0 0 1 1 5 9 2 0 2 6 3 7 5 5 3 0 0 0 0 98
429 Chemistry: Electrical Current Producing Apparatus, Product, and Process 66 3 5 3 0 0 2 0 2 1 7 0 1 0 1 1 1 1 2 1 0 0 97
702 DP: Measuring, Calibrating, or Testing (Data Processing) 19 2 0 0 0 0 0 1 3 5 1 1 6 6 8 9 6 13 10 6 1 0 97
330 Amplifiers 75 0 1 3 2 3 2 0 2 0 1 3 0 0 1 1 0 0 0 0 0 0 94
341 Coded Data Generation or Conversion 64 0 0 0 2 0 2 1 0 1 1 3 6 0 1 4 1 2 1 3 1 0 93
252 Compositions 51 0 4 0 0 2 1 6 1 5 2 3 2 2 2 0 3 2 1 3 0 0 90
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 48 1 0 1 0 1 0 2 4 6 3 1 2 3 4 5 2 1 2 0 0 0 86
331 Oscillators 74 1 1 0 0 0 1 1 0 3 0 0 0 0 0 0 0 0 1 0 1 0 83
361 Electricity: Electrical Systems and Devices 53 0 1 0 1 3 0 4 3 3 2 2 0 1 1 2 0 1 1 1 0 0 79
435 Chemistry: Molecular Biology and Microbiology 14 0 1 1 2 1 6 3 4 3 9 5 6 5 3 5 5 1 3 2 0 0 79
439 Electrical Connectors 50 2 0 1 1 2 0 2 1 1 1 0 2 2 2 3 4 0 2 1 1 0 78
701 DP: Vehicles, Navigation, and Relative Location (Data Processing) 26 1 0 0 1 0 1 3 2 2 1 3 6 1 4 6 2 3 7 3 1 0 73
029 Metal Working 43 1 1 0 1 2 0 4 2 1 1 1 2 2 2 0 4 1 2 1 0 0 71
455 Telecommunications 54 1 1 0 0 1 0 0 2 0 2 0 0 4 2 2 0 1 1 0 0 0 71
441 Buoys, Rafts, and Aquatic Devices 41 3 1 0 0 2 0 2 1 0 1 1 4 1 2 2 1 2 3 2 0 0 69
128 Surgery (includes Class 600) 32 1 1 0 0 0 4 1 1 4 2 3 3 7 1 0 2 2 1 2 0 0 67
382 Image Analysis 11 2 2 1 0 0 0 3 1 4 2 1 1 7 5 7 10 4 2 0 0 0 63
423 Chemistry of Inorganic Compounds 45 0 1 0 1 1 0 3 3 1 2 0 1 0 2 1 1 0 0 0 0 0 62
148 Metal Treatment 33 1 2 0 0 0 2 1 3 1 3 2 2 2 1 1 2 1 1 2 0 0 60
156 Adhesive Bonding and Miscellaneous Chemical Manufacture 28 1 3 2 0 1 0 0 1 0 3 4 6 1 3 2 2 1 0 0 0 0 58
398 Optical Communications 26 1 0 1 1 2 2 3 3 1 1 2 2 1 2 3 3 2 0 0 0 0 56
205 Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions 25 1 2 1 1 1 2 4 2 4 3 1 0 2 1 0 1 1 2 1 0 0 55
436 Chemistry: Analytical and Immunological Testing 24 1 2 0 0 1 1 0 1 0 1 1 2 1 5 3 5 1 3 2 1 0 55
033 Geometrical Instruments 36 1 1 0 0 2 1 0 2 3 0 1 0 1 0 1 0 1 2 1 1 0 54
405 Hydraulic and Earth Engineering 27 0 1 0 2 0 0 1 1 1 0 2 0 2 2 2 3 3 3 2 0 0 52
422 Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing 28 0 1 0 0 2 1 1 2 4 1 1 2 1 0 0 1 3 2 2 0 0 52
294 Handling: Hand and Hoist-Line Implements 40 1 0 0 0 0 1 1 1 0 1 0 1 1 0 2 1 0 0 0 0 0 50
365 Static Information Storage and Retrieval 30 0 1 0 1 0 1 5 1 1 1 1 2 1 1 1 1 1 0 0 0 0 49
117 Single-Crystal, Oriented-Crystal, and Epitaxy Growth Processes; Non-Coating Apparatus Therefor 16 1 1 1 0 0 0 1 5 1 4 5 3 1 3 0 2 1 1 2 0 0 48
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 19 0 0 0 0 1 2 0 0 1 3 5 4 3 4 3 1 0 1 0 1 0 48
313 Electric Lamp and Discharge Devices 27 0 0 1 0 0 0 2 3 3 0 0 3 1 1 1 0 1 2 0 2 0 47
174 Electricity: Conductors and Insulators 30 0 0 0 0 1 0 1 3 2 2 1 1 0 0 2 1 2 0 0 0 0 46
181 Acoustics 32 0 2 0 0 0 0 0 2 0 0 2 1 1 0 2 1 1 2 0 0 0 46
239 Fluid Sprinkling, Spraying, and Diffusing 30 1 0 1 0 1 0 0 1 1 1 2 0 0 1 1 1 2 1 0 0 0 44
440 Marine Propulsion 16 0 0 0 1 0 0 1 0 1 1 4 2 3 1 1 5 2 1 3 1 1 44
248 Supports (e.g., for holding articles, etc.) 26 0 0 0 1 1 0 1 0 0 3 1 0 1 1 2 0 2 2 1 1 0 43
370 Multiplex Communications 18 1 1 0 0 3 1 0 1 1 3 0 0 4 0 8 0 2 0 0 0 0 43
374 Thermal Measuring and Testing 31 1 1 0 1 1 2 0 1 1 0 1 0 0 0 1 1 0 1 0 0 0 43
219 Electric Heating 27 1 0 1 0 1 2 1 2 3 1 0 0 0 3 0 0 0 0 0 0 0 42
165 Heat Exchange 27 0 1 0 0 0 0 0 0 2 2 0 3 1 0 1 1 0 1 2 0 0 41
204 Chemistry: Electrical and Wave Energy 27 1 0 1 0 0 0 0 1 2 1 1 3 1 2 1 0 0 0 0 0 0 41
318 Electricity: Motive Power Systems 33 0 0 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 0 41
501 Compositions: Ceramic 6 1 0 0 0 2 3 2 0 1 3 2 5 4 3 2 1 1 3 1 1 0 41
377 Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems 32 0 0 0 0 0 0 1 3 0 1 0 0 0 0 1 0 0 0 0 0 0 38
210 Liquid Purification or Separation 12 0 1 0 0 1 0 3 0 3 0 1 1 3 1 2 1 3 1 3 0 0 36
416 Fluid Reaction Surfaces (i.e., Impellers) 25 1 0 1 0 0 0 3 0 1 0 0 0 0 1 1 0 0 2 1 0 0 36
074 Machine Element or Mechanism 27 0 0 0 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 0 0 35
505 Superconductor Technology: Apparatus, Material, Process 0 0 0 0 1 4 5 10 2 3 4 1 1 1 0 2 1 0 0 0 0 0 35
307 Electrical Transmission or Interconnection Systems 20 1 0 0 0 0 0 2 0 2 0 1 2 0 1 1 0 3 0 0 1 0 34
380 Cryptography 25 0 1 0 0 0 0 0 1 0 1 1 1 1 0 1 1 1 0 0 0 0 34
062 Refrigeration 17 0 0 0 0 0 2 0 0 1 2 0 1 1 4 2 2 0 0 0 0 0 32
430 Radiation Imagery Chemistry: Process, Composition, or Product Thereof 12 0 1 0 1 0 2 1 1 3 1 1 1 1 0 1 1 2 2 0 1 0 32
345 Computer Graphics Processing and Selective Visual Display Systems 14 0 0 1 0 0 0 2 1 0 0 2 1 4 1 3 0 1 1 0 0 0 31
002 Apparel 20 0 0 0 0 0 0 2 1 0 1 0 0 1 1 2 1 0 0 0 1 0 30
200 Electricity: Circuit Makers and Breakers 28 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 30
323 Electricity: Power Supply or Regulation Systems 21 0 1 1 0 0 2 2 0 0 1 0 1 0 0 1 0 0 0 0 0 0 30
714 Error Detection/Correction and Fault Detection/Recovery 21 0 0 0 1 1 0 0 0 1 1 1 1 0 0 2 0 0 0 1 0 0 30
706 DP: Artificial Intelligence (Data Processing) 0 0 0 0 0 0 2 1 1 1 2 2 1 3 4 1 6 4 0 0 0 0 28
065 Glass Manufacturing 13 0 1 0 0 0 0 2 1 2 0 0 0 4 0 1 2 0 1 0 0 0 27
378 X-Ray or Gamma Ray Systems or Devices 11 1 1 0 0 1 0 3 0 1 3 0 0 1 0 3 1 1 0 0 0 0 27
384 Bearings 16 1 0 1 0 1 1 0 0 1 0 0 0 0 4 1 0 0 0 0 0 0 26
106 Compositions: Coating or Plastic 14 0 0 1 0 0 1 0 2 0 1 0 0 0 0 0 0 1 2 1 2 0 25
228 Metal Fusion Bonding 19 0 0 1 0 0 1 2 1 1 0 0 0 0 0 0 0 0 0 0 0 0 25
134 Cleaning and Liquid Contact with Solids 11 1 0 0 0 0 0 0 0 0 0 0 1 0 0 2 0 3 2 4 0 0 24
381 Electrical Audio Signal Processing Systems and Devices 9 0 1 0 0 0 1 0 0 0 3 0 0 1 1 2 2 1 1 2 0 0 24
700 DP: Generic Control Systems or Specific Applications (Data Processing) 6 1 0 0 1 1 0 0 1 1 1 1 1 1 0 0 0 1 4 3 1 0 24
703 DP: Structural Design, Modeling, Simulation, and Emulation (Data Processing) 6 0 1 1 0 0 0 1 1 2 0 3 1 1 1 2 3 1 0 0 0 0 24
042 Firearms 5 0 0 0 0 0 0 0 0 0 0 0 5 1 3 1 2 3 1 2 0 0 23
091 Motors: Expansible Chamber Type 18 0 0 0 0 0 0 0 2 1 0 0 0 1 0 0 0 0 1 0 0 0 23
216 Etching a Substrate: Processes 12 0 0 0 1 0 1 1 1 1 1 2 2 1 0 0 0 0 0 0 0 0 23
277 Seal for a Joint or Juncture 13 1 0 0 1 0 0 0 0 0 0 1 0 1 0 0 0 6 0 0 0 0 23
360 Dynamic Magnetic Information Storage or Retrieval 20 0 0 0 0 0 0 0 2 0 0 0 0 0 0 1 0 0 0 0 0 0 23
363 Electric Power Conversion Systems 16 0 0 0 0 0 0 2 0 0 0 0 0 2 1 0 0 0 1 0 0 0 22
417 Pumps 8 1 1 0 0 0 0 0 0 3 1 2 0 2 0 1 3 0 0 0 0 0 22
075 Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures 8 1 0 0 0 0 0 0 0 1 1 0 1 4 0 2 0 1 0 1 1 0 21
180 Motor Vehicles 14 0 3 1 0 0 0 0 0 0 0 1 0 1 1 0 0 0 0 0 0 0 21
329 Demodulators 17 0 0 0 0 0 0 1 1 0 0 0 0 0 1 0 0 1 0 0 0 0 21
362 Illumination 17 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 1 1 0 0 21
704 DP: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression (Data Processing) 12 0 1 0 0 0 0 0 1 1 1 0 1 0 0 1 2 1 0 0 0 0 21
024 Buckles, Buttons, Clasps, Etc. 11 0 0 0 1 0 2 1 0 0 0 0 2 0 1 0 0 2 0 0 0 0 20
220 Receptacles 13 0 0 0 0 0 1 0 0 1 1 1 0 0 1 0 0 0 1 1 0 0 20
235 Registers (e.g., cash registers, calculators, devices for counting movements of devices, etc.) 14 0 0 0 0 0 0 0 0 0 0 0 0 1 1 2 0 1 0 1 0 0 20
709 Multicomputer Data Transferring or Plural Processor Synchronization (Electrical Computers and Digital Processing Systems) 0 0 0 0 0 0 0 0 1 1 1 6 0 2 5 1 2 0 0 0 0 0 19
332 Modulators 17 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 18
415 Rotary Kinetic Fluid Motors or Pumps 9 0 0 0 0 1 0 1 1 2 0 0 1 0 1 0 0 1 1 0 0 0 18
420 Alloys or Metallic Compositions 14 0 1 0 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 18
710 Input/Output (Electrical Computers and Digital Processing Systems) 6 0 0 0 0 0 0 0 1 4 1 1 0 1 1 2 0 0 1 0 0 0 18
086 Ammunition and Explosive-Charge Making 11 0 1 0 0 0 0 1 0 0 0 1 0 0 0 2 0 1 0 0 0 0 17
164 Metal Founding 3 0 1 0 0 0 1 0 2 1 2 1 0 1 0 0 5 0 0 0 0 0 17
188 Brakes 11 0 0 0 0 0 1 0 0 0 3 0 0 1 0 0 1 0 0 0 0 0 17
206 Special Receptacle or Package 9 0 1 0 0 0 2 1 1 0 0 0 0 0 0 0 0 1 1 1 0 0 17
403 Joints and Connections 10 0 0 0 0 0 0 0 0 0 1 1 0 1 0 2 0 2 0 0 0 0 17
451 Abrading 10 2 1 0 0 0 0 1 1 0 0 0 0 0 0 1 0 0 0 1 0 0 17
092 Expansible Chamber Devices 9 1 0 1 0 0 0 1 0 1 0 1 0 0 1 1 0 0 0 0 0 0 16
116 Signals and Indicators 13 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 16
126 Stoves and Furnaces 12 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 1 0 0 0 16
138 Pipes and Tubular Conduits 10 0 0 1 0 0 0 0 0 1 1 0 0 1 0 1 0 0 1 0 0 0 16
338 Electrical Resistors 11 0 1 0 1 0 0 0 0 0 1 0 0 0 1 0 0 1 0 0 0 0 16
351 Optics: Eye Examining, Vision Testing and Correcting 7 0 0 0 0 0 1 1 1 0 0 0 0 0 0 3 1 1 0 1 0 0 16
414 Material or Article Handling 12 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 16
175 Boring or Penetrating the Earth 13 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 15
242 Winding, Tensioning, or Guiding 4 1 0 0 0 0 0 1 0 3 2 1 2 0 0 0 0 0 0 0 1 0 15
267 Spring Devices 10 0 0 0 0 0 0 0 0 0 0 1 0 2 0 0 0 0 2 0 0 0 15
418 Rotary Expansible Chamber Devices 4 0 1 3 0 2 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 15
445 Electric Lamp or Space Discharge Component or Device Manufacturing 7 0 0 0 0 0 0 1 0 0 1 1 0 0 0 0 2 0 3 0 0 0 15
052 Static Structures (e.g., Buildings) 10 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 2 0 0 0 0 14
136 Batteries: Thermoelectric and Photoelectric 9 0 1 0 0 0 0 1 0 0 0 0 1 0 1 1 0 0 0 0 0 0 14
254 Implements or Apparatus for Applying Pushing or Pulling Force 5 0 0 0 0 2 1 2 0 0 0 1 0 2 1 0 0 0 0 0 0 0 14
285 Pipe Joints or Couplings 6 0 0 0 0 1 1 0 0 1 3 0