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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 GRANT

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 grant )
( 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 419 23 7 5 6 3 7 45 50 22 25 25 25 31 28 41 23 31 22 31 23 24 916
102 Ammunition and Explosives 489 17 7 5 6 3 5 19 30 13 15 6 5 4 9 7 14 12 20 18 16 9 729
342 Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) 439 8 18 19 7 2 6 9 22 14 14 24 14 12 5 4 6 10 9 12 13 9 676
114 Ships 238 10 1 3 2 0 6 4 14 7 16 13 25 15 29 16 9 20 13 17 25 17 500
073 Measuring and Testing 281 6 9 4 4 2 4 2 3 9 9 16 16 9 9 14 16 11 12 13 23 8 480
244 Aeronautics 227 13 9 9 10 3 2 5 14 8 9 7 6 4 4 3 7 2 4 13 7 9 375
250 Radiant Energy 166 8 5 3 4 2 4 15 18 5 11 9 7 8 7 9 5 7 4 7 9 8 321
324 Electricity: Measuring and Testing 159 8 9 10 5 1 1 6 14 8 9 6 9 5 6 4 8 3 6 16 8 8 309
089 Ordnance 142 8 6 6 4 0 3 6 17 11 8 8 6 0 7 10 7 9 15 11 10 6 300
532 Organic Compounds (includes Classes 532-570) 179 13 8 7 4 4 2 5 11 7 10 8 1 4 5 2 1 0 4 6 2 5 288
356 Optics: Measuring and Testing 120 10 8 5 5 5 5 6 5 6 8 15 5 6 5 17 4 11 2 4 3 4 259
327 Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems 227 4 0 0 1 0 0 4 2 2 2 2 2 0 1 5 0 1 1 0 1 1 256
343 Communications: Radio Wave Antennas 143 7 5 5 3 5 3 2 3 2 1 1 5 3 6 1 8 12 10 10 13 7 255
372 Coherent Light Generators 121 7 10 5 4 2 5 9 9 13 12 13 8 11 2 7 1 2 1 2 4 3 251
149 Explosive and Thermic Compositions or Charges 168 4 1 1 1 2 0 3 10 3 6 2 1 2 5 4 5 3 5 6 8 9 249
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 103 4 1 5 0 4 2 5 12 10 15 16 4 12 4 8 10 3 4 2 4 6 234
385 Optical Waveguides 68 5 3 6 6 5 1 8 7 5 10 7 12 6 12 6 6 7 12 6 8 7 213
359 Optics: Systems and Elements 100 6 6 4 3 5 7 4 4 4 6 1 1 9 4 7 4 5 5 13 4 4 206
348 Television 124 4 3 4 3 0 1 0 2 2 2 3 2 1 0 0 2 1 0 0 2 1 157
060 Power Plants 95 7 3 1 2 1 1 2 6 0 3 5 2 1 0 1 1 1 2 5 7 2 148
333 Wave Transmission Lines and Networks 99 3 3 5 2 1 4 4 5 1 0 3 3 2 0 0 2 2 1 1 1 0 142
434 Education and Demonstration 96 8 5 0 0 1 0 6 3 1 4 0 2 2 1 0 6 1 1 0 3 1 141
708 Arithmetic Processing and Calculating (Electrical Computers) 101 2 4 6 3 0 3 2 0 2 3 2 3 1 0 2 2 1 0 1 0 1 139
428 Stock Material or Miscellaneous Articles 37 1 3 4 3 1 2 4 1 6 4 5 11 6 4 7 15 4 4 5 3 3 133
438 Semiconductor Device Manufacturing: Process 40 2 3 0 6 0 2 2 7 2 7 11 5 0 4 4 2 8 8 4 8 5 130
310 Electrical Generator or Motor Structure 64 5 2 4 0 2 0 4 3 0 1 6 3 3 2 4 1 1 4 5 3 8 125
340 Communications: Electrical 73 1 2 0 1 1 3 2 2 0 3 2 2 4 8 3 1 3 2 3 1 6 123
257 Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) 29 1 2 0 0 0 5 3 7 5 2 6 4 3 4 3 6 6 6 7 4 11 114
137 Fluid Handling 73 4 2 1 0 0 1 1 3 2 1 2 3 0 4 1 4 2 1 1 0 1 107
315 Electric Lamp and Discharge Devices: Systems 69 2 7 4 1 3 0 2 3 0 1 2 2 2 1 3 3 0 0 0 0 0 105
427 Coating Processes 27 2 4 10 1 2 0 0 7 2 2 4 4 3 6 7 4 4 1 4 7 3 104
375 Pulse or Digital Communications 40 3 2 1 1 0 0 2 2 4 2 2 3 7 4 2 4 3 5 3 6 2 98
429 Chemistry: Electrical Current Producing Apparatus, Product, and Process 65 0 4 4 3 1 0 0 1 2 1 3 4 1 0 2 0 0 2 1 0 3 97
702 DP: Measuring, Calibrating, or Testing (Data Processing) 17 0 2 1 1 0 0 0 0 0 3 3 2 2 8 6 7 5 8 8 14 10 97
330 Amplifiers 71 3 0 1 1 4 2 2 2 2 0 2 1 0 1 0 1 1 0 0 0 0 94
341 Coded Data Generation or Conversion 59 2 2 1 0 2 0 0 3 0 0 2 1 3 3 2 1 4 0 4 1 3 93
252 Compositions 48 1 1 4 1 0 0 1 2 1 5 3 1 3 1 3 4 1 2 2 3 3 90
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 47 0 0 0 0 2 0 1 1 5 6 1 3 2 1 4 4 3 3 1 2 0 86
331 Oscillators 66 5 1 2 2 0 1 1 0 2 1 0 0 0 0 0 0 0 0 0 1 1 83
361 Electricity: Electrical Systems and Devices 48 1 2 0 2 1 2 1 1 5 3 1 4 1 0 1 1 1 1 1 0 2 79
435 Chemistry: Molecular Biology and Microbiology 14 0 0 0 2 0 0 2 1 5 6 6 2 7 3 9 4 2 3 5 3 5 79
439 Electrical Connectors 44 4 3 0 2 0 2 1 3 0 1 1 0 0 3 0 2 3 3 4 0 2 78
701 DP: Vehicles, Navigation, and Relative Location (Data Processing) 25 1 0 0 1 0 1 0 0 3 2 3 1 3 4 2 4 5 4 5 5 4 73
029 Metal Working 38 1 3 2 0 1 1 2 4 0 3 1 1 1 0 3 1 1 4 1 2 1 71
455 Telecommunications 54 0 0 2 0 0 0 1 0 1 0 0 2 1 0 3 0 4 1 0 0 2 71
441 Buoys, Rafts, and Aquatic Devices 38 0 5 2 0 0 2 0 0 3 0 1 0 3 2 2 2 2 1 2 4 0 69
128 Surgery (includes Class 600) 28 1 3 0 1 1 0 2 2 1 1 5 1 4 3 7 0 1 1 1 3 1 67
382 Image Analysis 8 0 1 3 1 2 1 0 2 1 1 2 2 0 1 3 7 11 3 5 3 6 63
423 Chemistry of Inorganic Compounds 37 5 0 0 0 1 1 4 1 2 1 2 2 0 1 0 3 1 1 0 0 0 62
148 Metal Treatment 32 1 0 2 1 0 0 1 0 1 2 4 3 1 2 2 0 3 1 1 1 2 60
156 Adhesive Bonding and Miscellaneous Chemical Manufacture 26 2 0 1 3 2 0 1 0 1 0 2 4 2 4 2 3 1 2 2 0 0 58
398 Optical Communications 20 0 1 2 2 1 2 0 2 2 4 2 1 0 2 1 3 4 0 4 1 2 56
205 Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions 22 3 1 1 2 1 1 2 1 3 3 5 1 0 1 2 1 0 1 0 1 3 55
436 Chemistry: Analytical and Immunological Testing 22 1 1 1 1 0 0 1 0 2 1 1 0 0 1 3 3 3 4 3 2 5 55
033 Geometrical Instruments 35 1 1 1 0 0 1 1 1 0 4 1 1 0 0 1 0 1 0 0 3 2 54
405 Hydraulic and Earth Engineering 24 2 1 0 1 1 0 1 1 1 1 0 0 2 0 3 0 3 5 0 5 1 52
422 Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing 26 0 1 1 1 0 0 0 4 0 2 2 2 2 1 0 1 1 1 2 1 4 52
294 Handling: Hand and Hoist-Line Implements 36 4 1 0 0 0 0 1 0 2 0 1 0 0 2 0 0 3 0 0 0 0 50
365 Static Information Storage and Retrieval 29 0 0 0 0 1 0 2 2 1 4 1 1 2 1 1 2 0 1 1 0 0 49
117 Single-Crystal, Oriented-Crystal, and Epitaxy Growth Processes; Non-Coating Apparatus Therefor 15 0 2 1 1 0 0 0 0 0 4 5 5 2 1 2 3 1 3 1 1 1 48
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 18 1 0 0 0 0 0 1 2 0 0 0 1 1 3 4 6 1 2 5 2 1 48
313 Electric Lamp and Discharge Devices 25 0 1 1 0 1 0 0 0 3 2 2 1 1 1 2 0 1 2 1 1 2 47
174 Electricity: Conductors and Insulators 29 0 0 1 0 0 0 1 1 1 2 1 5 0 0 0 0 2 1 1 0 1 46
181 Acoustics 30 0 2 0 2 0 0 0 0 1 1 0 1 2 0 1 0 3 0 1 2 0 46
239 Fluid Sprinkling, Spraying, and Diffusing 30 0 0 0 2 0 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 0 44
440 Marine Propulsion 13 0 0 2 0 0 1 0 1 0 2 0 4 0 6 0 1 3 4 2 1 4 44
248 Supports (e.g., for holding articles, etc.) 25 0 0 0 1 1 0 1 1 0 0 2 1 1 0 0 2 2 0 4 1 1 43
370 Multiplex Communications 18 0 1 0 0 1 2 0 1 1 0 1 3 0 0 2 3 0 1 2 6 1 43
374 Thermal Measuring and Testing 28 2 1 1 0 1 2 1 1 1 1 0 0 1 0 0 0 0 1 1 1 0 43
219 Electric Heating 23 0 3 1 0 2 1 1 0 3 0 5 0 0 0 0 3 0 0 0 0 0 42
165 Heat Exchange 24 3 0 0 0 1 0 0 0 0 2 2 1 1 1 1 0 1 0 1 0 3 41
204 Chemistry: Electrical and Wave Energy 25 2 1 0 1 0 0 0 0 0 1 1 3 0 2 1 2 2 0 0 0 0 41
318 Electricity: Motive Power Systems 33 0 0 0 0 0 1 1 0 1 0 0 0 2 0 1 0 0 1 1 0 0 41
501 Compositions: Ceramic 5 0 1 1 0 0 0 2 3 1 1 3 1 6 4 1 1 2 3 1 3 2 41
377 Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems 31 0 0 0 1 0 0 0 1 1 1 1 1 0 0 0 0 0 1 0 0 0 38
210 Liquid Purification or Separation 12 0 0 0 1 0 1 0 1 3 1 1 1 0 3 2 2 0 4 0 1 3 36
416 Fluid Reaction Surfaces (i.e., Impellers) 23 1 1 0 0 0 0 1 1 2 1 0 1 0 0 1 0 1 0 1 1 1 36
074 Machine Element or Mechanism 25 1 1 0 0 0 1 0 0 0 1 0 2 0 0 0 1 0 0 2 1 0 35
505 Superconductor Technology: Apparatus, Material, Process 0 0 0 0 0 0 1 3 4 8 4 8 1 0 0 1 1 2 1 1 0 0 35
307 Electrical Transmission or Interconnection Systems 19 0 0 0 0 0 0 1 3 0 0 2 1 1 1 0 0 2 0 3 0 1 34
380 Cryptography 17 0 0 0 2 0 0 0 1 1 1 0 3 1 1 1 0 0 2 2 0 2 34
062 Refrigeration 16 0 1 0 0 0 0 2 0 0 1 2 0 0 1 3 3 2 1 0 0 0 32
430 Radiation Imagery Chemistry: Process, Composition, or Product Thereof 9 1 2 0 1 0 1 1 1 1 0 1 2 1 1 0 2 2 0 2 3 1 32
345 Computer Graphics Processing and Selective Visual Display Systems 12 1 0 1 0 0 1 0 0 0 1 1 2 1 0 4 1 1 2 1 1 1 31
002 Apparel 19 0 1 0 0 0 0 0 2 0 1 0 1 0 0 2 1 1 1 0 0 1 30
200 Electricity: Circuit Makers and Breakers 28 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 30
323 Electricity: Power Supply or Regulation Systems 21 0 0 1 1 0 0 2 2 0 0 0 0 0 1 1 1 0 0 0 0 0 30
714 Error Detection/Correction and Fault Detection/Recovery 18 1 0 1 0 0 1 1 1 0 0 0 3 0 0 1 0 2 0 0 0 1 30
706 DP: Artificial Intelligence (Data Processing) 0 0 0 0 0 0 0 0 1 3 0 0 2 2 1 3 2 2 2 3 4 3 28
065 Glass Manufacturing 10 2 1 1 0 0 0 0 0 2 1 2 0 0 0 2 2 2 1 0 1 0 27
378 X-Ray or Gamma Ray Systems or Devices 11 0 0 2 0 0 1 1 1 0 0 4 0 0 0 0 1 2 4 0 0 0 27
384 Bearings 15 0 2 0 0 1 0 2 0 0 0 1 0 0 0 1 4 0 0 0 0 0 26
106 Compositions: Coating or Plastic 12 0 0 0 1 0 0 1 0 2 0 0 0 2 0 1 0 0 0 1 5 0 25
228 Metal Fusion Bonding 18 0 1 0 1 0 0 2 1 1 1 0 0 0 0 0 0 0 0 0 0 0 25
134 Cleaning and Liquid Contact with Solids 9 0 2 0 0 0 0 0 0 1 0 0 0 0 0 0 3 0 1 2 3 3 24
381 Electrical Audio Signal Processing Systems and Devices 9 0 0 1 0 0 0 1 0 0 0 2 0 0 0 0 2 1 1 4 1 2 24
700 DP: Generic Control Systems or Specific Applications (Data Processing) 6 0 0 0 1 1 0 1 0 0 0 1 2 1 0 2 0 0 0 0 5 4 24
703 DP: Structural Design, Modeling, Simulation, and Emulation (Data Processing) 3 1 1 1 0 1 0 1 0 1 0 1 2 2 1 0 2 2 2 0 2 1 24
042 Firearms 5 0 0 0 0 0 0 0 0 0 0 0 0 0 5 3 2 0 2 4 2 0 23
091 Motors: Expansible Chamber Type 16 1 1 0 0 0 0 0 0 2 0 1 0 0 0 1 0 0 0 1 0 0 23
216 Etching a Substrate: Processes 10 2 0 0 0 1 0 2 0 0 2 1 1 2 0 1 0 1 0 0 0 0 23
277 Seal for a Joint or Juncture 11 1 1 1 0 1 0 0 0 0 0 0 0 1 0 1 0 0 0 6 0 0 23
360 Dynamic Magnetic Information Storage or Retrieval 18 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 0 0 0 0 23
363 Electric Power Conversion Systems 15 1 0 0 0 0 0 0 2 0 0 0 0 0 1 2 0 0 0 1 0 0 22
417 Pumps 8 0 1 1 0 0 0 0 0 0 3 1 1 1 1 0 1 3 1 0 0 0 22
075 Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures 8 0 0 0 0 0 0 0 0 1 1 0 1 0 0 1 3 1 1 2 0 2 21
180 Motor Vehicles 13 1 0 1 3 0 0 0 0 0 0 0 1 0 0 0 2 0 0 0 0 0 21
329 Demodulators 17 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 1 0 0 0 1 0 21
362 Illumination 17 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 1 0 1 21
704 DP: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression (Data Processing) 11 0 0 1 0 1 0 0 0 1 0 0 2 0 0 0 1 0 1 2 1 0 21
024 Buckles, Buttons, Clasps, Etc. 10 0 1 0 0 0 0 2 1 0 0 0 0 2 2 0 0 0 1 1 0 0 20
220 Receptacles 13 0 0 0 0 0 0 1 0 1 0 0 2 0 0 0 0 0 1 1 0 1 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 0 0 1 1 2 0 1 0 1 20
709 Multicomputer Data Transferring or Plural Processor Synchronization (Electrical Computers and Digital Processing Systems) 0 0 0 0 0 0 0 0 0 0 0 1 1 1 2 1 4 5 1 3 0 0 19
332 Modulators 14 0 2 1 0 0 1 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 0 1 0 0 0 2 2 0 0 1 1 0 0 0 2 0 0 18
420 Alloys or Metallic Compositions 11 0 1 1 0 1 1 1 0 1 0 0 0 0 0 0 0 0 1 0 0 0 18
710 Input/Output (Electrical Computers and Digital Processing Systems) 4 0 1 0 0 0 0 1 0 0 0 2 2 2 0 1 2 0 2 0 0 1 18
086 Ammunition and Explosive-Charge Making 10 1 0 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 3 0 0 0 17
164 Metal Founding 3 0 0 1 0 0 0 0 1 0 1 3 1 1 0 1 0 4 0 1 0 0 17
188 Brakes 11 0 0 0 0 0 0 1 0 0 0 0 3 0 0 0 1 0 1 0 0 0 17
206 Special Receptacle or Package 9 0 0 1 0 0 1 0 0 2 1 0 0 0 0 0 0 0 0 1 2 0 17
403 Joints and Connections 10 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 2 1 1 0 0 17
451 Abrading 8 1 3 0 1 0 0 0 1 1 0 0 0 0 0 0 0 1 0 0 0 1 17
092 Expansible Chamber Devices 9 0 0 0 1 0 1 0 0 2 0 0 1 0 0 0 1 1 0 0 0 0 16
116 Signals and Indicators 13 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 16
126 Stoves and Furnaces 11 0 0 0 0 0 0 0 2 2 0 0 0 0 0 0 0 0 0 1 0 0 16
138 Pipes and Tubular Conduits 10 0 0 0 1 0 0 0 0 0 0 2 0 0 1 0 0 1 0 0 1 0 16
338 Electrical Resistors 11 0 0 0 1 1 0 0 0 0 0 1 0 0 0 1 0 0 1 0 0 0 16
351 Optics: Eye Examining, Vision Testing and Correcting 4 0 1 1 1 0 0 1 1 0 1 0 0 0 0 0 1 3 0 2 0 0 16
414 Material or Article Handling 10 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 16
175 Boring or Penetrating the Earth 12 1 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 15
242 Winding, Tensioning, or Guiding 4 0 1 0 0 0 0 0 0 1 2 1 0 3 2 0 0 0 0 0 0 1 15
267 Spring Devices 10 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 2 0 0 0 1 1 15
418 Rotary Expansible Chamber Devices 4 0 0 0 1 1 1 1 2 3 0 2 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 0 0 1 0 0 1 1 0 0 0 1 1 0 3 0 15
052 Static Structures (e.g., Buildings) 9 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 2 0 0 14
136 Batteries: Thermoelectric and Photoelectric 9 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 1 0 0 0 0 14
254 Implements or Apparatus for Applying Pushing or Pulling Force 4 0 0 0 1 0 3 0 1 1 0 0 1 0 0 2 0 1 0 0 0 0 14
285 Pipe Joints or Couplings 5 0 1 0 0 0 1 0 1 0 0 4 0