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

Patenting In Technology Classes,
Breakout By Organization

Count of 1969 - 2005 Utility Patent Grants,
By Calendar Year of Grant
With Patent Counts Based on Primary Patent Classification

- Explanation of Data -

Rank Ordered Listing of Organizations Receiving 5 or More Utility Patents During the Period
Having Primary Classification In

Class 588, Hazardous or Toxic Waste Destruction or Containment

( technology class is determined by the primary classification assigned to the patent- see 'Explanation of Data' )
( patent ownership is determined by the first-named assignee listed on a patent )

The following table displays first-named assignees and counts of their associated patents, as distributed by the year of patent grant
First-Named Assignee 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 Total
~Individually Owned Patent 0 0 1 1 1 3 3 0 2 2 4 6 4 12 6 9 10 8 8 9 9 7 2 3 10 15 17 16 22 17 15 11 5 6 3 2 3 252
UNITED STATES OF AMERICA, DEPARTMENT OF ENERGY 2 0 1 2 5 2 2 7 5 3 4 2 2 3 2 5 1 2 0 1 4 2 0 1 1 4 2 1 3 3 3 6 2 2 0 0 0 85
HITACHI, LTD 0 0 0 0 0 0 0 0 0 0 0 1 3 1 0 1 3 4 7 2 0 1 1 2 2 0 1 3 0 1 2 0 0 2 0 0 0 37
WESTINGHOUSE ELECTRIC CORP. 0 0 0 0 0 0 0 0 2 0 0 0 1 0 4 4 1 2 4 4 0 1 1 1 1 2 3 2 1 0 0 0 0 0 0 0 0 34
COMMISSARIAT A L'ENERGIE ATOMIQUE 2 0 0 0 0 2 0 0 1 2 0 0 1 2 1 1 0 4 2 1 2 2 0 0 0 0 0 0 0 3 0 1 0 2 1 0 0 30
BRITISH NUCLEAR FUELS PLC 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 1 0 2 1 0 1 2 1 2 0 0 2 2 1 0 0 17
DORYOKURO KAKUNENRYO KAIHATSU JIGYODAN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 3 0 1 2 0 2 3 1 1 0 0 0 0 0 0 0 16
UNITED STATES OF AMERICA, ARMY 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 0 0 0 2 0 4 2 1 1 1 0 0 1 1 16
ROCKWELL INTERNATIONAL CORPORATION 0 0 0 0 1 1 2 1 0 0 1 0 1 0 0 1 1 0 3 1 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 15
DOW CHEMICAL COMPANY 0 0 0 0 0 0 1 0 1 0 0 1 1 0 3 3 0 2 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 14
KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH 0 0 0 0 0 0 0 0 0 0 0 0 2 2 1 2 1 2 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12
KERNFORSCHUNGSANLAGE JULICH GMBH 0 0 0 0 0 0 0 0 0 0 0 1 2 1 0 2 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10
MOLTEN METAL TECHNOLOGY, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 1 2 3 1 0 0 0 0 0 0 0 10
SEVENSON ENVIRONMENTAL SERVICES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 1 2 1 3 0 1 0 0 10
SIEMENS AKTIENGESELLSCHAFT 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 3 0 0 2 1 0 0 0 0 0 0 10
GENERAL ELECTRIC COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 1 1 0 0 0 0 0 0 0 1 0 0 2 0 0 1 0 0 0 0 0 0 9
KRAFTWERK UNION AKTIENGESELLSCHAFT 0 0 0 0 0 0 0 0 0 0 0 2 1 1 0 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
PELT & HOOYKAAS B.V. 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 4 3 0 0 0 0 0 0 0 0 0 0 9
UNIVERSITY OF CALIFORNIA, THE REGENTS OF 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 1 2 0 0 1 0 0 2 0 0 0 8
NUKEM G.M.B.H. 0 0 0 0 0 0 0 0 0 1 0 1 0 0 1 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
ATLANTIC RICHFIELD COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 2 2 0 0 0 0 0 0 0 0 0 6
BATTELLE MEMORIAL INSTITUTE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 0 3 0 0 0 0 0 6
DEUTSCHE GESELLSCHAFT FUR WIEDERAUFARBEITUNG VON KERNBRENNSTOFFEN MBH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
E. I. DU PONT DE NEMOURS AND COMPANY 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 6
MITSUBISHI HEAVY INDUSTRIES, LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 4 0 0 6
SOCIETE GENERALE POUR LES TECHNIQUES NOUVELLES S.G.N. 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 2 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 6
UNITED KINGDOM ATOMIC ENERGY AUTHORITY 0 0 0 0 0 0 0 1 1 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 6
UNITED STATES OF AMERICA, NAVY 0 0 0 0 0 0 0 0 2 0 1 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 6
AIR PRODUCTS AND CHEMICALS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 0 1 0 0 0 0 0 0 0 0 0 5
ASEA AKTIEBOLAG 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
ASSOCIATED UNIVERSITIES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 2 0 0 0 0 0 0 0 5
BAYER AKTIENGESELLSCHAFT 0 0 0 0 0 0 0 0 1 0 2 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 5
COMMODORE APPLIED TECHNOLOGIES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 1 0 1 0 0 5
COMMODORE LABORATORIES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 2 0 0 0 0 0 0 0 0 5
ENTACT, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 1 1 0 0 0 0 0 0 5
GESELLSCHAFT FUR KERNFORSCHUNG MBH 0 0 0 0 0 0 0 0 1 2 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
HOECHST AKTIENGESELLSCHAFT 0 0 0 0 0 0 0 0 0 1 0 1 0 0 1 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 5
JGC CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 5
RADIOACTIVE ISOLATION CONSORTIUM, LLC 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 1 0 0 5
TOSHIBA CORPORATION 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 1 0 0 0 5
WESTINGHOUSE SAVANNAH RIVER COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 3 0 0 0 0 5


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Electronic Information Products Division - PTMB
MDW 4C18; P.O Box 1450
Alexandria VA 22313-1450

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