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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 2001 - 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 508, Solid Anti-Friction Devices, Materials Therefor, Lubricant or Separant 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 2001 2002 2003 2004 2005 Total
LUBRIZOL CORPORATION 18 14 14 11 6 63
INFINEUM INTERNATIONAL LTD 2 7 15 8 4 36
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY 5 6 9 10 4 34
~Individually Owned Patent 10 7 8 4 2 31
IDEMITSU KOSAN COMPANY LIMITED 7 3 3 8 2 23
ECOLAB INC. 4 2 4 7 3 20
CHEVRON ORONITE COMPANY LLC 0 2 7 6 4 19
ETHYL CORPORATION 5 3 6 2 3 19
EXXON CHEMICALS PATENTS INC. 10 1 3 0 0 14
INFINEUM USA L.P. 8 2 1 1 1 13
NIPPON MITSUBISHI OIL CORPORATION 4 2 4 1 2 13
CROMPTON CORPORATION 3 1 4 0 3 11
MINEBEA KABUSHIKI-KAISHA (MINEBEA CO., LTD) 4 1 2 3 1 11
NSK LIMITED 3 3 2 2 1 11
E. I. DU PONT DE NEMOURS AND COMPANY 1 2 4 3 0 10
TONENGENERAL SEKIYU K.K. 2 1 4 1 2 10
CIBA SPECIALTY CHEMICALS CORPORATION 1 4 1 1 0 7
EXXON RESEARCH + ENGINEERING CO. 7 0 0 0 0 7
KYODO YUSHI CO., LTD. 3 4 0 0 0 7
NTN CORPORATION 2 2 2 1 0 7
HENKEL CORPORATION 3 2 1 0 0 6
INDIAN OIL CORPORATION, LTD. 1 2 3 0 0 6
R. T. VANDERBILT COMPANY, INC. 1 2 1 2 0 6
ASAHI DENKA KOGYO K.K. 3 1 0 0 1 5
CASTROL LIMITED 4 0 0 1 0 5
CHEVRON CHEMICAL COMPANY LLC 4 1 0 0 0 5
MOBIL OIL CORP. 3 1 0 1 0 5
RHODIA CHIMIE 0 1 1 2 1 5
SHELL OIL COMPANY 0 2 0 2 1 5
UNIROYAL CHEMICAL COMPANY, INC. 1 0 2 1 1 5


PTMB Contacts

Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Electronic Information Products Division - PTMB
MDW 4C18; P.O Box 1450
Alexandria VA 22313-1450

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

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


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