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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 148, Metal Treatment

( 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 15 15 19 26 22 97
KAWASAKI STEEL CORPORATION 16 15 13 23 25 92
NIPPON STEEL CORP. 25 13 11 6 20 75
GENERAL ELECTRIC COMPANY 8 7 8 10 23 56
HENKEL CORPORATION 9 12 8 5 9 43
SUMITOMO METAL INDUSTRIES CO., LTD. 5 7 4 4 9 29
HITACHI METALS LTD. 4 7 2 4 8 25
NSK LIMITED 2 2 6 6 7 23
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) 2 4 8 7 1 22
ALUMINUM COMPANY OF AMERICA 7 8 6 0 0 21
KOBE STEEL LTD. 4 3 3 6 4 20
NKK CORPORATION 3 6 3 4 4 20
ALPS ELECTRIC CO., LTD. 4 6 2 5 2 19
TOSHIBA CORPORATION 3 3 4 2 6 18
INTERNATIONAL BUSINESS MACHINES CORPORATION 1 2 7 3 4 17
ALCOA INC. 0 0 3 5 8 16
KAISER ALUMINUM + CHEMICAL CORPORATION 7 5 2 1 0 15
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 6 0 2 4 3 15
ALCAN INTERNATIONAL LIMITED 2 1 6 1 4 14
HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN(HENKEL KGAA) 1 5 2 2 4 14
SUMITOMO SPECIAL METAL COMPANY LIMITED 2 0 1 5 6 14
SANDVIK AKTIEBOLAG 2 3 2 4 2 13
DAIDO TOKUSHUKO, K.K. 2 3 4 1 2 12
POHANG IRON & STEEL CO., LTD. 4 2 1 4 1 12
REYNOLDS METALS COMPANY 5 2 0 2 3 12
SMS SCHLOEMANN-SIEMAG AG 1 1 4 3 3 12
UNITED TECHNOLOGIES CORPORATION 4 5 1 0 2 12
NIPPON PAINT CO., LTD. 1 3 2 2 3 11
PECHINEY RHENALU 2 2 3 2 2 11
SHIN ETSU CHEMICAL CO., LTD. 0 2 2 7 0 11
SUMITOMO ELECTRIC INDUSTRIES CO., LTD. 3 2 2 2 2 11
TDK CORPORATION 2 1 2 2 4 11
TOYOTA JIDOSHA K.K. 2 1 4 2 2 11
BRUSH WELLMAN INC. 2 2 3 2 1 10
DOWA MINING CO., LTD. 2 1 3 3 1 10
NATIONAL RESEARCH INSTITUTE FOR METALS 0 1 1 3 5 10
NIPPON MINING & METALS CO., LIMITED 0 2 2 1 5 10
NTN CORPORATION 1 1 1 3 4 10
SOLLAC 3 1 2 2 2 10
EXXONMOBIL UPSTREAM RESEARCH COMPANY 0 0 2 7 0 9
FURUKAWA ELECTRIC CO., LTD. 1 4 1 1 2 9
SHOWA DENKO KABUSHIKI KAISHA 1 4 2 1 1 9
ALLIED-SIGNAL INC. 1 3 2 1 1 8
BOEING COMPANY 1 1 1 2 3 8
GENERAL MOTORS CORPORATION 0 3 3 1 1 8
MICRON TECHNOLOGY, INC. 1 2 2 2 1 8
MITSUBISHI MATERIALS CORPORATION 2 1 3 2 0 8
OLIN CORPORATION 1 3 2 1 1 8
THYSSEN STAHL AG 2 1 2 3 0 8
VACUUMSCHMEIZE GMBH 2 0 2 3 1 8
WATERBURY ROLLING MILLS, INC. 1 4 1 1 1 8
ACCIAI SPECIALI TERNI S.P.A. 0 0 0 2 5 7
CORUS ALUMINIUM WALZPRODUKTE GMBH 0 0 1 3 3 7
FUJITSU LIMITED 0 1 2 0 4 7
HONEYWELL INTERNATIONAL INC. 0 0 0 1 6 7
MAZDA MOTOR CORPORATION 1 1 2 3 0 7
PRAXAIR S.T. TECHNOLOGY, INC. 0 0 1 3 3 7
SONY CORPORATION 1 2 1 1 2 7
TIMKEN COMPANY 1 3 1 2 0 7
UNITED STATES OF AMERICA, NAVY 2 0 3 1 1 7
ALSTOM (SWITZERLAND) LTD 0 0 0 0 6 6
CATERPILLAR INC. 1 2 1 1 1 6
DAIMLER-CHRYSLER AKTIENGESELLSCHAFT 0 0 2 2 2 6
FUJI PHOTO FILM CO., LTD 3 0 1 2 0 6
INCO ALLOYS INTERNATIONAL, INC. 1 1 1 2 1 6
IOWA STATE UNIVERSITY RESEARCH FOUNDATION INC. 3 1 0 2 0 6
KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.) 0 0 0 3 3 6
MITSUBISHI HEAVY INDUSTRIES CO., LTD. 0 1 1 4 0 6
NIPPON LIGHT METAL COMPANY LIMITED 2 0 2 1 1 6
NISSHIN STEEL CO., LTD. 0 1 0 2 3 6
NORTHWESTERN UNIVERSITY 0 0 0 2 4 6
SANYO ELECTRIC CO., LTD. 0 1 3 0 2 6
USX CORPORATION 3 0 2 0 1 6
A. FINKL + SONS CO. 2 1 1 0 1 5
ABB RESEARCH LTD. 1 1 1 1 1 5
ASCOMETAL (SOCIETE ANONYME) 3 0 1 0 1 5
BETHLEHEM STEEL CORPORATION 1 1 0 3 0 5
CRS HOLDINGS, INC. 3 0 1 0 1 5
ENERGY CONVERSION DEVICES, INC. 0 2 1 2 0 5
FORD GLOBAL TECHNOLOGIES, INC. 1 2 1 1 0 5
GOLDEN ALUMINUM COMPANY 1 3 0 1 0 5
HITACHI, LTD 1 3 1 0 0 5
KOMATSU LTD. 0 0 0 3 2 5
LTV STEEL COMPANY, INC. 1 0 1 3 0 5
MANNESMANN AG 0 3 1 1 0 5
MCDONNELL DOUGLAS CORP. 0 3 1 1 0 5
NISSAN MOTOR COMPANY, LIMITED 1 0 2 1 1 5
OVAKO STEEL COUPLINGS AB 0 1 1 3 0 5
SIEMENS AKTIENGESELLSCHAFT 0 1 1 1 2 5
SILICON GENESIS CORPORATION 0 0 3 2 0 5
TEXAS INSTRUMENTS, INCORPORATED 1 2 2 0 0 5
TOYO KOHAN CO., LTD. 0 0 1 3 1 5
UNION SIDERURGIGUE DU NORD ET DE L'EST DE LA FRANCE 0 0 2 1 2 5
UNIVERSITY OF TENNESSEE RESEARCH CORPORATION 0 1 0 2 2 5
YKK CORPORATION 2 2 0 0 1 5


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