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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, ENVIRONMENTAL PROTECTION AGENCY

( 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
210 Liquid Purification or Separation 9 0 0 0 0 1 0 0 0 0 0 1 0 0 2 0 0 1 0 0 1 0 15
435 Chemistry: Molecular Biology and Microbiology 1 0 1 0 1 0 1 0 0 1 1 0 0 1 2 0 3 2 1 0 0 0 15
060 Power Plants 2 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 2 1 3 1 1 0 12
073 Measuring and Testing 7 0 0 0 0 1 0 0 1 0 1 0 0 0 0 0 1 1 0 0 0 0 12
123 Internal-Combustion Engines 1 0 0 0 0 0 0 0 0 0 0 0 4 0 0 0 2 1 1 1 1 0 11
431 Combustion 8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
095 Gas Separation: Processes 2 0 0 0 0 1 0 0 0 0 1 0 0 0 1 1 1 0 0 0 0 0 7
110 Furnaces 4 0 0 0 0 0 0 0 0 1 0 1 1 0 0 0 0 0 0 0 0 0 7
423 Chemistry of Inorganic Compounds 2 0 0 1 0 1 0 1 1 0 0 0 0 0 1 0 0 0 0 0 0 0 7
422 Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing 1 0 0 0 1 0 0 0 1 0 0 3 0 0 0 0 0 0 0 0 0 0 6
096 Gas Separation: Apparatus 1 0 0 0 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 4
126 Stoves and Furnaces 1 0 0 0 0 0 0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 4
137 Fluid Handling 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 0 4
502 Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making 0 0 0 0 0 1 0 0 2 0 0 0 0 0 0 0 0 0 1 0 0 0 4
180 Motor Vehicles 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 0 0 0 0 3
250 Radiant Energy 2 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 3
252 Compositions 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 1 0 0 0 0 0 3
048 Gas: Heating and Illuminating 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
122 Liquid Heaters and Vaporizers 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
134 Cleaning and Liquid Contact with Solids 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 2
318 Electricity: Motive Power Systems 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 2
367 Communications, Electrical: Acoustic Wave Systems and Devices 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
406 Conveyors: Fluid Current 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
417 Pumps 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 2
436 Chemistry: Analytical and Immunological Testing 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 2
530 Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 2
588 Hazardous or Toxic Waste Destruction or Containment 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 2
029 Metal Working 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
033 Geometrical Instruments 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1
052 Static Structures (e.g., Buildings) 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1
053 Package Making 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
055 Gas Separation 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
138 Pipes and Tubular Conduits 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1
156 Adhesive Bonding and Miscellaneous Chemical Manufacture 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
203 Distillation: Processes, Separatory 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
204 Chemistry: Electrical and Wave Energy 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
208 Mineral Oils: Processes and Products 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
220 Receptacles 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
236 Automatic Temperature and Humidity Regulation 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
239 Fluid Sprinkling, Spraying, and Diffusing 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
303 Fluid-Pressure and Analogous Brake Systems 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1
324 Electricity: Measuring and Testing 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
359 Optics: Systems and Elements 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
378 X-Ray or Gamma Ray Systems or Devices 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
396 Photography 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
427 Coating Processes 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
428 Stock Material or Miscellaneous Articles 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
429 Chemistry: Electrical Current Producing Apparatus, Product, and Process 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
451 Abrading 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
585 Chemistry of Hydrocarbon Compounds 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
706 DP: Artificial Intelligence (Data Processing) 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1
ALL ALL CLASSES 67 0 1 2 2 6 2 6 6 4 7 7 12 2 8 2 10 8 8 5 4 0 169

PTMT Contacts

Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Electronic Information Products Division - PTMT (formerly TAF Branch)
MDW 4C18; P.O. Box 1450
Alexandria, VA 22313-1450

tel: (571) 272-5600
fax: (571) 273-0110
email: oeip@uspto.gov

address of PTMT Internet pages : http://www.uspto.gov/web/offices/ac/ido/oeip/taf/tafp.html
ftp download of selected PTMT reports from : ftp.uspto.gov/pub/taf/

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