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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 1998 - 2002 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 508, Solid Anti-Friction Devices, Materials Therefor, Lubricant or Separate Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions

( 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 1998 1999 2000 2001 2002 Total
EXXON CHEMICALS PATENTS INC. 32 31 18 10 1 92
LUBRIZOL CORPORATION 22 15 17 18 14 86
~Individually Owned Patent 11 13 10 10 7 51
EXXON RESEARCH + ENGINEERING CO. 18 11 11 7 0 47
IDEMITSU KOSAN COMPANY LIMITED 5 8 8 7 3 31
ETHYL CORPORATION 3 5 7 5 3 23
CHEVRON CHEMICAL COMPANY 12 4 1 1 1 19
MOBIL OIL CORP. 4 4 5 3 1 17
CHEVRON CHEMICAL COMPANY LLC 0 5 4 4 1 14
INFINEUM USA L.P. 0 0 4 8 2 14
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY 0 0 2 5 6 13
HENKEL CORPORATION 2 2 2 3 2 11
KYODO YUSHI CO., LTD. 1 1 2 3 4 11
NSK LIMITED 4 1 0 3 3 11
TONEN CORPORATION 2 2 3 4 0 11
ECOLAB INC. 1 3 0 4 2 10
NTN CORPORATION 3 3 0 2 2 10
SHELL OIL COMPANY 3 0 5 0 2 10
CIBA SPECIALTY CHEMICALS CORPORATION 1 1 2 1 4 9
INFINEUM INTERNATIONAL LTD 0 0 0 2 7 9
CASTROL LIMITED 2 1 1 4 0 8
LUBRIZOL ADIBIS HOLDINGS (UK) LIMITED 0 2 4 2 0 8
R. T. VANDERBILT COMPANY, INC. 2 0 3 1 2 8
NIPPON OIL COMPANY LTD. 4 2 1 0 0 7
ASAHI DENKA KOGYO K.K. 1 1 0 3 1 6
CLARIANT GMBH 0 0 3 1 2 6
INDIAN OIL CORPORATION, LTD. 1 2 0 1 2 6
NIPPON MITSUBISHI OIL CORPORATION 0 0 0 4 2 6
CARGILL, INC. 0 0 1 2 2 5
ELISHA TECHNOLOGIES CO. L.L.C. 0 0 3 2 0 5
MINEBEA KABUSHIKI-KAISHA (MINEBEA CO., LTD) 0 0 0 4 1 5
UNIROYAL CHEMICAL COMPANY, INC. 1 1 2 1 0 5
WAVERLY LIGHT AND POWER 0 1 1 2 1 5


PTMD Contacts

Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Office of Electronic Information Products - PTMD
PK3- Suite 441; P.O Box 1450
Alexandria VA 22313

tel: (703) 306-2600
fax: (703) 306-2737
email: oeip@uspto.gov

address of PTMD pages at the USPTO Web Site: http://www.uspto.gov/web/offices/ac/ido/oeip/taf/tafp.html
ftp download of selected PTMD reports and materials from : ftp.uspto.gov/pub/taf/


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