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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 1969 - 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 454, Ventilation

( 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 Total
~Individually Owned Patent 28 26 26 32 45 33 27 21 29 24 30 39 25 21 20 24 46 29 42 38 39 49 38 54 34 42 24 35 34 44 45 41 58 58 47 46 1293
DAIMLER-BENZ AKTIENGESELLSCHAFT 0 2 2 1 4 0 5 0 0 1 2 1 0 0 0 1 1 4 1 3 1 0 5 4 5 2 0 3 3 0 2 0 0 0 0 0 53
CARRIER CORPORATION 3 0 2 2 1 0 1 2 1 1 0 0 1 1 1 2 2 5 1 1 2 0 1 1 1 2 1 0 0 1 1 4 3 4 1 0 49
DENSO 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 0 0 0 0 0 2 8 4 4 10 5 12 45
NISSAN MOTOR COMPANY, LIMITED 0 0 0 0 2 2 1 1 0 0 0 3 4 2 6 2 2 3 3 2 1 1 1 3 2 0 0 0 0 0 0 0 1 0 0 0 42
GENERAL MOTORS CORPORATION 0 0 3 4 3 3 3 0 2 0 0 0 0 0 0 0 1 0 0 4 1 0 5 0 2 0 3 1 0 0 2 2 0 0 0 0 39
SAMSUNG ELECTRONICS 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 5 0 5 17 7 2 1 1 0 0 38
VALEO CLIMATISATION 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 1 8 1 8 5 8 1 33
FORD MOTOR COMPANY 4 0 0 1 3 0 0 0 0 0 0 1 0 0 1 1 2 0 1 2 0 0 0 1 2 0 0 2 2 0 1 2 1 0 0 0 27
MITSUBISHI DENKI KABUSHIKI KAISHA 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 2 2 2 0 0 1 0 0 1 1 0 2 3 4 3 1 1 2 0 0 27
SIEMENS AKTIENGESELLSCHAFT 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 2 2 1 3 1 4 1 1 0 1 0 0 0 0 0 1 1 2 21
AB SVENSKA FLAKTFABRIKEN 0 0 1 2 5 0 2 2 2 3 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 18
BOWLES FLUIDICS CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 2 1 0 4 0 1 1 0 1 1 2 1 0 0 1 1 0 0 0 0 0 18
DAIMLER-CHRYSLER AKTIENGESELLSCHAFT 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 8 2 0 1 16
HITACHI, LTD 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 1 1 0 3 1 0 1 1 2 1 1 0 0 0 0 0 0 0 1 1 16
NIPPONDENSO CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 1 0 0 0 1 0 0 2 0 2 0 1 5 0 1 0 0 0 0 0 16
TITON HARDWARE LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 3 1 0 2 1 2 0 1 0 0 2 0 14
TOYODA GOSEI KABUSHIKI KAISHA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 1 3 2 0 0 0 0 0 1 0 0 3 1 0 14
BEHR GMBH & CO. 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 3 4 2 0 1 1 1 0 13
DELPHI TECHNOLOGIES, 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 2 1 3 3 4 13
TOYOTA JIDOSHA K.K. 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 1 1 1 5 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 13
COR-A-VENT, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 2 1 1 2 1 1 1 0 2 0 12
GARRETT CORPORATION 1 0 0 0 0 0 0 1 0 1 7 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 0 0 1 0 0 0 0 0 1 0 0 0 0 1 0 0 1 2 1 0 1 0 0 0 0 1 1 1 0 0 0 0 0 0 1 0 12
TOMKINS INDUSTRIES, 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 2 0 0 0 1 4 2 1 1 1 0 0 12
WEHR CORPORATION 1 2 0 0 3 1 4 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 0 12
UNITED TECHNOLOGIES CORPORATION 2 1 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 2 1 0 0 0 0 1 0 0 0 0 0 11
AIR FACTORS, INC. 1 0 3 2 2 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 0 0 10
AMERICAN AIR FILTER COMPANY, INC. 0 2 1 0 1 0 1 2 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 10
DEERE + COMPANY 0 0 0 0 0 1 1 0 0 0 0 0 0 1 0 0 1 0 1 0 0 0 0 1 0 0 0 0 0 0 1 0 1 0 0 2 10
EMERSON ELECTRIC CO. 0 0 1 0 0 1 0 0 1 0 0 0 0 0 1 0 1 2 0 2 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 10
GENERAL ELECTRIC COMPANY 1 0 0 1 1 1 2 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 1 10
VALEO THERMIQUE HABITACLE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 1 5 1 0 0 0 0 0 0 0 0 10
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 1 0 2 1 0 1 0 0 0 2 0 9
LANDIS & GYR POWERS, INC. 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 2 3 0 0 0 0 0 0 0 0 9
PHOENIX CONTROLS CORP. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 0 0 1 1 2 1 0 0 0 0 0 0 1 0 9
REGIE NATIONALE DES USINES RENAULT 1 0 1 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 2 0 9
AB PH. NEDERMAN & COMPANY 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 0 1 3 0 1 0 1 0 0 0 0 8
AMERICAN STANDARD, INC. 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 1 0 1 1 1 0 0 0 0 0 0 8
BOEING COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 1 0 0 0 0 0 0 0 0 0 1 0 1 0 2 8
FORD GLOBAL TECHNOLOGIES, 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 2 3 0 2 1 0 0 0 8
GEBRUDER TROX, GESELLSCHAFT MIT BESCHRANKTER HAFTUNG 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 1 0 8
HALTON OY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 3 1 0 1 0 0 0 0 0 0 0 1 0 0 8
HAMILTON INDUSTRIES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 2 0 0 0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 8
INTERNATIONAL BUSINESS MACHINES CORPORATION 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 1 2 0 0 1 0 1 2 8
MAZDA MOTOR CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 0 1 1 1 0 0 0 0 0 0 1 0 0 0 0 8
NORDISK VENTILATOR CO. AKTIESELSKAB 0 2 1 1 2 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 0 0 8
SCHAKO METALLWARENFABRIK FERDINAND SCHAD KG 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 2 3 0 0 0 0 0 0 0 0 0 0 0 0 8
TOSHIBA CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 2 2 1 0 0 0 0 0 1 0 0 0 8
ZEXEL CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 1 0 0 0 1 1 1 1 0 0 0 0 8
AIR HANDLING ENGINEERING 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 2 2 2 1 0 7
AMERICAN HOSPITAL SUPPLY CORPORATION 0 0 0 0 2 0 0 3 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 0 0 7
E. H. PRICE LIMITED 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 0 2 0 2 2 0 0 0 7
H. KRANTZ GMBH & CO. 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 6 0 0 0 0 0 0 0 0 0 0 0 0 0 7
JENN-AIR CORPORATION 3 1 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 0 0 0 0 7
JOHNSON, SERVICE COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 2 0 2 0 1 0 0 0 0 0 0 0 7
KEWAUNEE SCIENTIFIC CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 2 0 0 0 2 0 1 7
LABCONCO CORPORATION 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 0 2 0 0 7
MORIROKU KABUSHIKI KAISHA 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 1 0 0 0 1 0 2 1 0 7
TEMPMASTER CORPORATION 0 0 0 1 3 0 0 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
WESTLAND AIRCRAFT, LTD. 4 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 0 0 0 0 0 7
AIR VENT, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 2 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 6
CALSONIC KANSEI 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 0 0 0 0 0 0 0 0 1 4 0 1 6
CENTER CORE, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 2 2 0 0 0 0 0 0 0 0 0 0 6
DAIMLER-BENZ AEROSPACE AIRBUS 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 3 2 0 1 0 0 0 0 0 6
FLAKT AB 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
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 2 0 0 4 6
LUCENT TECHNOLOGIES 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 1 2 0 0 0 2 0 0 1 6
NORDSON CORPORATION 0 0 0 0 0 1 0 0 0 0 0 0 1 0 2 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 6
PROFESSIONAL SUPPLY, INC. 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 3 0 1 0 0 0 0 0 0 0 0 6
PROTECTAIRE SYSTEMS CO. 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 1 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
WESTINGHOUSE ELECTRIC CORP. 3 1 0 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 0 0 0 0 6
ABB FLAKT AB 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 0 0 1 0 1 1 0 0 0 5
AIR O SCOOP CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
AMERICAN WARMING + VENTILATING, INC. 1 0 0 1 0 2 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 5
BAYERISCHE MOTOREN WERKE AG 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 1 1 0 0 5
BINKS MANUFACTURING COMPANY 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 1 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 5
CANPLAS INDUSTRIES LIMITED 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 0 1 0 0 2 1 5
CHRYSLER MOTORS CORPORATION 0 1 0 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 1 1 1 0 0 0 0 0 5
COLLINS & AIKMAN PLASTICS, 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 2 1 2 0 0 0 0 5
CONTINENTAL INDUSTRIES, INC. 0 0 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 0 0 1 0 1 2 0 5
DISCO ENGINEERING, INC. 1 1 0 2 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 5
ELIXIR INDUSTRIES 0 0 0 0 0 0 0 0 1 0 0 2 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 5
FUJITSU GENERAL LIMITED 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 2 1 1 0 0 0 5
HY-C COMPANY INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 5
LEAR SIEGLER, INC. 0 0 0 1 2 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 0 0 0 0 5
LIBERTY DIVERSIFIED INDUSTRIES, 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 1 0 0 1 0 1 0 0 1 1 0 5
LYEMANCE 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 1 0 1 2 0 0 0 1 0 0 0 0 0 5
MATSUSHITA SEIKO COMPANY, LIMITED 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 0 0 0 0 5
PULLMAN, INCORPORATED 0 0 1 0 0 1 0 0 0 0 1 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 5
ROBERT BOSCH GMBH 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 5
RUSKIN MANUFACTURING COMPANY 0 0 0 0 2 0 0 0 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 5
SAAB-SCANIA AKTIEBOLAG 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
SIEGENIA-FRANK AG. 0 0 0 0 0 0 0 0 0 0 2 1 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD. 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 0 0 1 0 1 1 1 0 0 0 5
UNISYS CORPORATION 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 5
UNITED STATES OF AMERICA, DEPARTMENT OF THE INTERIOR 0 0 0 0 0 0 0 1 1 0 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
VALEO KLIMASYSTEME 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 0 0 0 0 2 1 5
VISTEON GLOBAL TECHNOLOGIES, 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 2 2 1 5
VOLKSWAGENWERK AKTIENGESELLSCHAFT 0 0 1 1 0 1 0 1 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 5
WALLACE-MURRAY CORPORATION 1 1 0 1 0 0 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 0 5
YOSHIDA KOGYO KABUSHIKI KAISHA 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5


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