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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 277, Seal for a Joint or Juncture

( 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
~Individually Owned Patent 20 25 18 33 38 134
GENERAL ELECTRIC COMPANY 1 7 18 13 17 56
ISHIKAWA GASKET CO. LTD. 6 13 8 9 4 40
DANA CORPORATION 7 6 3 11 9 36
CATERPILLAR INC. 2 1 15 5 1 24
CARL FREUDENBERG 1 5 4 3 6 19
NIPPON GASKET CO., LTD. 2 2 5 4 6 19
NOK CORPORATION 2 5 3 5 2 17
UNITED TECHNOLOGIES CORPORATION 3 3 4 3 3 16
A. W. CHESTERTON COMPANY 2 2 8 0 2 14
FREUDENBERG-NOK GENERAL PARTNERSHIP 2 3 4 1 3 13
NIPPON PILLAR PACKING CO. LTD. 3 1 2 4 3 13
FLOWSERVE MANAGEMENT COMPANY 0 3 0 4 4 11
JOHN CRANE, INC. 1 5 2 2 1 11
KALSI ENGINEERING, INC. 2 1 3 2 3 11
J.M. CLIPPER CORP. 1 1 5 0 3 10
GARLOCK INC. 2 2 2 2 1 9
ROLLS-ROYCE PLC 2 0 2 5 0 9
EG&G PRESSURE SCIENCE, INC. 7 0 1 0 0 8
FEDERAL-MOGUL WORLD WIDE, INC. 0 0 1 4 3 8
FEL-PRO INCORPORATED 3 3 2 0 0 8
MOTOREN-UND TURBINEN-UNION MUNCHEN GMBH 1 3 1 2 1 8
SKF USA INC. 3 1 2 1 1 8
TEIKOKU PISTON RING CO. LTD. 2 0 3 2 1 8
ELRING KLINGER GMBH 0 3 2 1 1 7
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) 1 2 2 0 2 7
MASCHINENFABRIK SULZER-BURCKHARDT AG 0 0 1 2 4 7
ROBERT BOSCH GMBH 0 0 2 3 2 7
UNITED STATES OF AMERICA, NAVY 1 0 0 0 6 7
BAL SEAL ENGINEERING COMPANY, INC. 0 3 2 1 0 6
DRESSER-RAND COMPANY 0 1 2 2 1 6
EAGLE INDUSTRY CO., LTD. 0 0 1 2 3 6
FORSHEDA AB 2 2 1 1 0 6
JETSEAL, INC. 0 0 0 5 1 6
KOKUSAN PARTS INDUSTRY CO., LTD. 0 1 2 3 0 6
MITSUBISHI HEAVY INDUSTRIES CO., LTD. 0 0 0 4 2 6
PARKER-HANNIFIN CORPORATION 0 3 0 1 2 6
SMITH INTERNATIONAL INC. 2 0 1 2 1 6
TRW INC. 0 0 0 4 2 6
YAZAKI CORP. 1 1 1 3 0 6
BAKER HUGHES INCORPORATED 1 1 0 3 0 5
BOEING COMPANY 0 1 0 1 3 5
DURAMETALLIC CORPORATION 3 2 0 0 0 5
MANNESMANN SACHS AG 0 0 1 3 1 5
N. V. RAYCHEM S.A. 2 2 1 0 0 5
NIPPON PISTON RING CO., LTD. 0 0 0 4 1 5
TOYODA JIDOSHOKKI SEISAKUSHO KABUSHIKI KAISHA 0 0 1 3 1 5
UTEX INDUSTRIES, INC. 0 2 0 1 2 5


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Office of Electronic Information Products - PTMD
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Alexandria VA 22313

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email: oeip@uspto.gov

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