Skip menu navigation Home > Listing of Viewable PTMD Reports > Table of Contents for This Set of Reports


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 2000 - 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 384, Bearings

( 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 2000 2001 2002 2003 2004 Total
NSK LIMITED 21 33 36 39 37 166
~Individually Owned Patent 20 32 25 18 11 106
NTN CORPORATION 10 11 16 21 12 70
KOYO SEIKO COMPANY, LTD. 9 13 11 10 15 58
MINEBEA KABUSHIKI-KAISHA (MINEBEA CO., LTD) 7 6 10 12 7 42
THK CO., LTD. 13 6 5 9 9 42
NIPPON THOMPSON CO., LTD. 11 7 2 6 7 33
INA WALZLAGER SCHAEFFLER OHG 9 8 8 4 3 32
TIMKEN COMPANY 1 5 9 11 6 32
DAIDO METAL COMPANY 9 7 8 5 2 31
TORRINGTON COMPANY 5 8 6 6 5 30
SKF GMBH 7 7 2 6 0 22
SEAGATE TECHNOLOGY, LLC 1 5 3 4 8 21
SKF INDUSTRIE S.P.A. 4 5 3 0 6 18
SANKYO SEIKI MFG. CO., LTD. 2 2 4 4 5 17
SKF FRANCE 1 5 4 5 2 17
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 2 2 5 1 5 15
GENERAL ELECTRIC COMPANY 2 3 3 2 2 12
AKTIEBOLAGET SKF 3 2 0 3 3 11
ROBERT BOSCH GMBH 2 3 2 3 1 11
SUMITOMO ELECTRIC INDUSTRIES CO., LTD. 2 3 1 2 2 10
INA-SCHAEFFLER KG 0 0 0 3 6 9
DANA CORPORATION 1 3 2 1 1 8
HONEYWELL INTERNATIONAL INC. 1 0 0 3 4 8
INTERNATIONAL BUSINESS MACHINES CORPORATION 1 3 1 2 1 8
NIKON CORPORATION 1 3 3 1 0 8
RELIANCE ELECTRIC TECHNOLOGIES, LLC 2 2 2 2 0 8
DAIMLER-CHRYSLER AKTIENGESELLSCHAFT 0 6 1 0 0 7
DELPHI TECHNOLOGIES, INC. 0 0 3 1 3 7
EMERSON POWER TRANSMISSION MANUFACTURING, L.P. 0 1 2 2 2 7
HIWIN TECHNOLOGIES CORP. 0 1 2 3 1 7
SEIKO INSTRUMENTS INC. 0 2 4 1 0 7
SKF ENGINEERING AND RESEARCH CENTRE, B.V. 0 1 4 1 1 7
SUNONWEALTH ELECTRIC MACHINE INDUSTRY CO., LTD. 0 2 3 2 0 7
FEDERAL-MOGUL WORLD WIDE, INC. 0 1 1 3 1 6
NGK SPARK PLUG CO., LTD. 0 1 0 4 1 6
NIDEC CORPORATION 3 1 1 0 1 6
PRATT & WHITNEY CANADA CORP. 2 0 0 1 3 6
SAMSUNG ELECTRONICS CO., LTD. 4 0 2 0 0 6
SKF LINEARSYSTEME GMBH 3 2 1 0 0 6
CANON KABUSHIKI KAISHA 0 0 3 1 1 5
FAG AUTOMOBILTECHNIK AG 2 1 1 0 1 5
FAG OEM UND HANDEL AG 2 1 2 0 0 5
GLYCO METALL-WERKE GLYCO B.V. & CO. KG 3 2 0 0 0 5
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN 0 1 2 0 2 5
KS GLEITLAGER GMBH 0 1 2 2 0 5
MORGAN CONSTRUCTION COMPANY 3 0 0 2 0 5
SCHNEEBERGER HOLDING AG 0 1 1 2 1 5
THOMSON INDUSTRIES INC. 2 2 1 0 0 5


PTMD Contacts

Questions regarding these reports should be directed to:

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

tel: (571) 272-5600
fax: (571) 273-0110
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/


Top

Skip menu navigation Home > Listing of Viewable PTMD Reports > Table of Contents for This Set of Reports