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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 1969 - 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 337, Electricity: Electrothermally or Thermally Actuated Switches

( 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 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 Total
~Individually Owned Patent 14 14 18 14 14 19 15 8 11 10 13 3 14 14 18 10 17 5 11 2 11 7 7 6 5 4 7 4 14 17 22 17 15 13 20 8 7 428
TEXAS INSTRUMENTS, INCORPORATED 11 7 9 1 3 13 11 9 2 4 2 3 1 6 4 5 7 2 4 5 4 3 7 2 1 2 1 0 1 3 3 1 2 1 2 4 0 146
GENERAL ELECTRIC COMPANY 9 7 5 9 10 12 3 10 7 4 5 2 7 5 1 3 1 1 2 2 0 2 0 4 2 0 0 2 1 0 2 2 1 1 2 2 1 127
WESTINGHOUSE ELECTRIC CORP. 10 7 6 14 11 18 11 3 6 8 2 2 4 0 2 2 6 2 1 1 3 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 122
THERM-O-DISC INCORPORATED 5 3 6 5 3 5 2 4 5 1 0 2 2 1 2 3 2 4 0 1 8 2 2 1 2 0 2 5 1 3 1 5 4 2 2 1 0 97
YAZAKI CORP. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 0 0 0 2 3 3 4 8 12 12 5 8 9 8 6 2 86
CHASE-SHAWMUT COMPANY 5 12 11 12 9 11 5 11 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 82
GOULD INC. 0 0 0 0 0 0 0 0 8 7 14 12 7 5 2 0 0 2 3 1 0 4 2 4 2 2 0 0 0 0 0 0 0 0 0 0 0 75
ROBERTSHAW CONTROLS COMPANY 1 2 7 12 2 7 8 3 4 3 0 1 0 5 1 1 0 1 0 0 1 0 2 2 5 1 1 0 0 0 0 2 0 0 1 0 0 73
LITTELFUSE, INC. 1 0 0 1 1 0 1 1 0 1 0 0 1 2 1 3 5 6 5 1 0 2 1 2 4 2 1 2 4 6 7 3 0 3 3 0 0 70
COOPER INDUSTRIES INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 3 4 4 10 8 3 7 3 2 3 4 8 2 1 1 0 0 0 0 67
S & C ELECTRIC CO. 1 0 5 0 4 1 2 2 10 2 4 5 5 6 2 7 3 0 1 1 0 1 0 0 0 0 0 1 2 2 0 0 0 0 0 0 0 67
MCGRAW-EDISON COMPANY 6 5 3 3 8 2 5 3 6 2 2 2 0 6 4 0 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 64
EATON CORPORATION 0 0 0 0 0 0 0 0 0 0 0 1 1 3 1 1 5 4 3 1 3 1 0 1 1 1 1 0 1 3 4 1 0 2 6 1 0 46
GTE PRODUCTS CORPORATION 0 0 5 0 1 5 1 0 1 5 1 0 0 1 1 0 1 0 5 0 1 2 0 2 0 1 0 0 0 0 0 0 0 0 0 0 0 33
MITSUBISHI DENKI KABUSHIKI KAISHA 0 3 4 2 2 1 2 1 0 0 0 1 2 1 0 0 0 1 5 2 2 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 31
COOPER TECHNOLOGIES COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 5 2 1 2 9 4 3 28
ELLENBERGER + POENSGEN GMBH 1 1 1 1 1 0 0 2 2 0 4 1 0 1 0 0 0 2 3 0 2 0 1 1 0 0 0 1 1 0 0 0 0 0 2 0 0 28
EMERSON ELECTRIC CO. 0 0 0 1 1 2 0 0 1 5 2 2 3 5 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 1 0 1 27
SIEMENS AKTIENGESELLSCHAFT 0 0 0 1 0 2 1 0 0 2 1 0 0 2 0 1 2 0 0 0 1 0 1 0 1 1 0 1 3 0 2 0 0 0 0 3 0 25
A. B. CHANCE CO. 0 0 3 0 0 1 2 2 1 2 0 3 0 1 0 0 1 1 1 2 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 23
HONEYWELL INC. 0 1 1 2 2 2 2 0 0 2 0 0 1 1 1 0 1 0 2 2 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 22
GENERAL MOTORS CORPORATION 0 0 4 2 7 3 0 1 1 1 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 21
PORTAGE ELECTRIC PRODUCTS, INC. 1 0 0 0 0 3 0 0 1 0 0 0 0 2 2 1 0 0 1 1 2 1 2 0 1 0 0 0 0 1 1 1 0 0 0 0 0 21
RTE CORPORATION 0 0 0 1 1 1 3 2 0 2 1 1 0 3 1 0 1 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 21
ILLINOIS TOOL WORKS INC. 0 0 0 0 0 0 0 0 5 0 1 6 4 0 0 0 0 0 0 0 0 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 19
MICRO DEVICES CORPORATION 0 2 0 1 4 4 4 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 19
S.O.C. CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 2 0 0 1 1 0 3 0 0 0 0 4 1 0 0 0 0 0 1 0 16
ELMWOOD SENSORS, INC. 0 1 1 0 0 0 0 0 1 0 0 0 0 2 1 1 0 1 0 2 0 1 0 1 0 1 0 0 1 0 1 0 0 0 0 0 0 15
I-T-E IMPERIAL CORPORATION 1 4 3 0 0 3 1 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 15
INTER CONTROL HERMANN KOHLER ELEKTRIK GMBH + CO. KG 0 0 0 0 0 1 1 0 1 2 0 0 1 1 0 1 1 1 1 0 1 1 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 15
HUBBELL INCORPORATED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 1 0 1 1 1 0 0 2 2 1 2 14
SAN-O INDUSTRIAL CORP. 0 0 0 0 0 0 0 0 0 2 1 1 3 2 1 1 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 1 0 0 0 14
SQUARE D COMPANY 2 0 1 1 1 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 2 0 0 0 1 1 1 0 0 0 0 0 1 0 14
AMERICAN THERMOSTAT CORPORATION 3 0 1 1 2 2 2 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13
FASCO INDUSTRIES, INC. 0 3 1 1 3 1 1 0 1 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13
AMP INCORPORATED 3 0 0 1 0 0 1 0 0 1 0 1 0 0 1 0 0 0 2 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 12
AT&T CORP. 1 0 1 0 3 0 1 0 3 1 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12
E.G.O. ELEKTRO-GERATE BLANC U. FISCHER KOMMANDIT 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 1 2 0 1 1 2 1 1 1 0 0 0 0 0 0 0 0 0 0 0 12
FEDERAL PACIFIC ELECTRIC COMPANY 1 1 5 1 0 1 0 0 0 0 0 0 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12
ITT CORPORATION 0 0 1 3 2 1 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 12
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 0 0 1 1 1 0 1 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 1 1 12
CUTLER-HAMMER INC. 1 1 2 0 0 2 2 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11
ELECTROVAC, FABRIKATION, ELEKTROTECHNISCHER SPEZIALARTIKE 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 2 0 1 0 1 0 0 1 0 0 0 0 1 1 0 0 0 0 1 2 0 11
WICKMANN-WERKE GMBH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 0 2 1 0 0 1 0 0 0 0 1 1 0 0 1 1 0 0 11
DANFOSS A/S 3 1 1 1 1 0 0 1 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10
FUJI ELECTRIC CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 1 1 0 0 0 0 0 1 0 0 0 0 0 2 1 0 1 10
RANCO INCORPORATED 2 0 1 1 1 1 1 0 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10
SUMITOMO WIRING SYSTEMS, LTD., CO. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 2 4 0 1 1 0 0 0 0 10
UCHIYA THERMOSTAT CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 2 2 0 0 1 1 3 0 0 10
ESSEX INTERNATIONAL INC. 0 2 2 3 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
HONEYWELL INTERNATIONAL INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 7 1 9
KEARNEY-NATIONAL INC. 0 0 0 0 0 0 0 0 1 0 0 0 0 2 3 0 0 0 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
NIFCO INC. 0 0 0 0 0 0 0 0 0 0 0 4 2 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
CANADIAN GENERAL ELECTRIC COMPANY LIMITED 2 0 0 0 0 1 0 0 0 1 1 0 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
ENGLISH ELECTRIC COMPANY LIMITED 2 4 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
LUCIEN FERRAZ + CIE 1 1 1 0 2 2 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
MECHANICAL PRODUCTS 0 0 2 0 0 0 0 0 1 2 0 0 0 0 1 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
MINNESOTA MINING AND MANUFACTURING COMPANY 0 0 0 0 1 1 0 0 2 0 2 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 8
THERMIK GERATEBAU GMBH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 3 2 1 0 0 0 0 8
UBUKATA INDUSTRIES CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 0 0 1 0 0 2 1 0 0 0 0 0 8
BEHR-THOMSON DEHNSTOFFREGLER GMBH 0 0 0 0 0 0 0 0 0 0 0 1 1 0 2 0 0 0 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 7
HARPER-WYMAN COMPANY 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 0 0 0 1 1 0 1 0 0 0 0 0 0 0 0 7
JOSLYN MFG. AND SUPPLY CO. 0 2 2 0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
LUCAS INDUSTRIES PUBLIC LTD. COMPANY 2 1 1 0 0 0 0 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
OTTER CONTROLS LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 0 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 7
RAYCHEM CORPORATION 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 2 0 2 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
B/K PATENT DEVELOPMENT CO., INC. 0 0 0 0 0 0 1 0 1 1 0 0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
COOPER POWER SYSTEMS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 2 0 0 0 0 0 0 0 0 0 0 0 6
GOULD ELECTRONICS INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 2 0 0 0 0 0 0 0 0 0 0 6
LA TELEMECANIQUE ELECTRIQUE 0 1 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
TSUNG-MOU YU 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 3 1 0 0 6
UCHIHASHI ESTEC CO., LTD 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 2 2 6
ABB RESEARCH LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 4 0 5
AISIN SEIKI KABUSHIKI KAISHA 0 0 0 0 0 0 0 0 0 0 0 1 0 2 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
HEINEMANN ELECTRIC COMPANY 0 0 0 0 0 0 0 0 0 2 0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
INTERNATIONAL BUSINESS MACHINES CORPORATION 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 5
MITSUBISHI MATERIALS CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 2 0 0 0 0 0 0 0 0 0 0 0 5
MOELLER GMBH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 1 1 5
NORTHERN TELECOM LIMITED 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
ROBERT BOSCH GMBH 0 0 0 1 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 5
TECHNAR, INCORPORATED 0 0 0 0 0 1 0 0 1 1 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
THERMOSTAT- UND SCHALTGERATEBAU GMBH & CO. KG 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 5


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