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

Patenting In Technology Classes,
Breakout By Organization

Count of 1969 - 2004 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 518, Chemistry: Fischer-Tropsch Processes; or Purification or Recovery of Products Thereof

( 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 Total
EXXON RESEARCH + ENGINEERING CO. 0 0 0 0 0 0 0 1 2 2 2 2 2 4 2 1 8 8 3 3 1 1 1 5 5 1 5 2 1 8 11 11 3 1 0 0 96
UNION CARBIDE CORPORATION 0 0 0 0 0 1 1 6 4 7 5 11 6 3 1 4 1 4 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 56
SHELL OIL COMPANY 0 0 0 0 1 0 0 1 2 0 0 1 1 3 6 4 3 0 1 1 5 2 3 0 2 0 0 1 0 1 3 0 0 1 0 2 44
TEXACO INC. 0 0 0 0 1 0 0 0 0 0 1 0 0 9 3 4 3 5 1 1 2 1 2 0 0 0 1 1 0 0 0 1 0 0 1 0 37
MOBIL OIL CORP. 0 0 0 0 0 0 1 0 5 4 6 2 5 0 2 2 0 2 0 0 0 3 0 0 0 0 0 0 1 0 0 1 0 0 0 0 34
INSTITUT FRANCAIS DU PETROLE 0 0 0 0 0 0 0 0 0 1 0 1 1 2 2 1 2 1 2 2 0 0 1 0 0 1 0 0 0 5 1 1 3 3 2 1 33
CHEVRON U.S.A. 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 0 0 0 0 2 3 15 8 28
EXXONMOBIL RESEARCH AND ENGINEERING 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 0 0 0 4 7 9 8 28
AIR PRODUCTS AND CHEMICALS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 2 1 0 1 0 0 2 1 0 0 1 1 0 4 0 1 3 1 21
IMPERIAL CHEMICAL INDUSTRIES PLC 0 0 0 0 0 0 0 2 1 0 0 2 0 1 0 1 0 2 0 0 0 1 1 1 1 0 1 0 0 0 1 0 1 3 0 0 19
~Individually Owned Patent 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 3 1 0 1 0 0 1 0 1 2 0 0 1 0 1 4 1 0 2 19
DOW CHEMICAL COMPANY 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0 2 1 1 4 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13
METALLGESELLSCHAFT AKTIENGESELLSCHAFT 0 0 0 0 0 0 1 1 2 1 0 2 2 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 0 0 0 0 13
SYNTROLEUM CORPORATION 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 8 1 1 1 12
CONOCO, INC. 0 0 0 0 0 0 0 2 0 2 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 1 0 11
GULF RESEARCH AND DEVELOPMENT COMPANY 0 0 0 0 0 0 0 1 1 2 2 1 0 0 2 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11
STANDARD OIL COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 3 3 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11
THE BRITISH PETROLEUM COMPANY P.L.C. 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 2 2 0 1 0 0 1 1 0 0 0 0 0 0 1 0 0 0 0 0 11
CONOCOPHILLIPS 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 0 0 0 0 0 2 8 10
RENTECH, 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 4 0 0 0 1 1 0 3 1 10
SASOL TECHNOLOGY (PROPRIETARY) LIMITED 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 2 4 10
PHILLIPS PETROLEUM COMPANY 0 0 1 0 0 0 0 1 0 1 2 1 0 0 0 0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
HALDOR TOPSOE A/S 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 2 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 0 8
AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 3 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 7
AMOCO CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 7
BASF AKTIENGESELLSCHAFT 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 2 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 7
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 1 0 2 2 0 2 7
AGIP PETROLI, S.P.A. 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 4 0 0 0 0 6
CHEM SYSTEMS INC. 0 0 0 0 0 0 2 0 1 0 0 0 0 0 0 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
MITSUBISHI GAS-CHEMICAL COMPANY, INC. 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 1 0 0 1 1 0 0 0 0 1 0 0 0 0 0 0 0 0 6
NATIONAL DISTILLERS AND CHEMICAL CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
UNITED STATES OF AMERICA, DEPARTMENT OF ENERGY 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 1 1 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 6
BP EXPLORATION OPERATING COMPANY LIMITED 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 0 0 1 4 5
DEN NORSKE STATS OLJESELSKAP A.S. 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 1 0 0 0 0 1 2 0 0 0 5
EXXONMOBIL CHEMICAL PATENTS 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 0 0 0 0 0 4 1 0 5
HOECHST AKTIENGESELLSCHAFT 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
HYDROCARBON 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 0 0 0 0 2 1 1 1 5
SAGAMI CHEMICAL RESEARCH CENTER 0 0 0 0 0 2 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
UNION OIL COMPANY OF CALIFORNIA 0 0 0 0 0 0 0 0 3 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5


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U.S. Patent and Trademark Office
Office of Electronic Information Products - PTMD
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