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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 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 123, Internal-Combustion Engines

( 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
~Individually Owned Patent 129 195 148 156 132 760
ROBERT BOSCH GMBH 80 89 121 128 142 560
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) 48 103 100 103 107 461
CATERPILLAR INC. 73 52 67 59 54 305
TOYOTA JIDOSHA K.K. 45 71 58 62 69 305
NISSAN MOTOR COMPANY, LIMITED 48 48 44 64 53 257
DELPHI TECHNOLOGIES, INC. 5 39 80 63 60 247
FORD GLOBAL TECHNOLOGIES, INC. 52 82 81 30 2 247
MITSUBISHI DENKI KABUSHIKI KAISHA 29 55 39 48 54 225
DENSO CORPORATION 36 28 39 53 60 216
HITACHI, LTD 30 30 40 56 29 185
DAIMLER-CHRYSLER AKTIENGESELLSCHAFT 41 45 32 35 23 176
GENERAL MOTORS CORPORATION 21 16 12 40 50 139
SANSHIN KOGYO KABUSHIKI KAISHA 37 34 40 18 2 131
UNISIA JECS CORPORATION 22 27 31 20 13 113
FORD GLOBAL TECHNOLOGIES, L.L.C. 0 0 0 44 68 112
YAMAHA HATSUDOKI KABUSHIKI KAISHA, YAMAHA MOTOR CO., LTD. 35 27 19 14 9 104
VISTEON GLOBAL TECHNOLOGIES, INC. 2 17 23 29 31 102
SIEMENS AKTIENGESELLSCHAFT 20 19 19 9 17 84
INA WALZLAGER SCHAEFFLER OHG 20 25 23 5 1 74
DAIMLERCHRYSLER CORPORATION 12 24 10 5 17 68
FILTERWERK MANN + HUMMEL GMBH 12 8 22 13 11 66
SIEMENS CANADA LTD. 12 24 19 8 3 66
BORGWARNER INC. 3 11 16 12 20 62
HYUNDAI MOTOR CO., LTD. 6 6 10 16 24 62
ISUZU MOTORS LIMITED 12 20 11 10 8 61
ANDREAS STIHL AG & CO. 5 10 10 20 12 57
DETROIT DIESEL CORPORATION 11 12 19 9 6 57
SUZUKI MOTOR CORPORATION 14 17 10 11 4 56
CUMMINS ENGINE CO., INC. 25 18 7 4 1 55
SIEMENS AUTOMOTIVE CORPORATION 11 13 17 6 3 50
AVL LIST GMBH 5 9 2 19 13 48
INTERNATIONAL ENGINE INTELLECTUAL PROPERTY COMPANY, L.L.C. 0 0 13 13 22 48
PORSCHE AG 5 6 13 9 11 44
KIORITZ CORPORATION 8 6 8 11 10 43
MAZDA MOTOR CORPORATION 12 9 8 8 6 43
BRUNSWICK CORPORATION 11 9 8 6 8 42
C.R.F. SOCIETA CONSORTILE PER AZIONI 7 5 4 13 13 42
AISIN SEIKI KABUSHIKI KAISHA 13 7 9 4 7 40
YAMAHA MARINE KABUSHIKI KAISHA 0 0 0 14 25 39
FEV MOTORENTECHNIK GMBH & CO. KG 7 9 14 5 3 38
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA 12 5 8 4 8 37
BOMBARDIER MOTOR CORPORATION OF AMERICA 0 7 17 9 3 36
BAYERISCHE MOTOREN WERKE AG 7 10 11 5 2 35
DIESEL ENGINE RETARDERS, INC. 9 10 8 4 4 35
EATON CORPORATION 6 12 3 8 6 35
DANA CORPORATION 4 11 5 6 6 32
FUJI JUKOGYO KABUSHIKI KAISHA 4 4 7 9 8 32
SIEMENS VDO AUTOMOTIVE, INC. 0 0 10 13 9 32
GENERAL ELECTRIC COMPANY 3 16 5 6 1 31
BRIGGS + STRATTON CORPORATION 6 8 5 6 5 30
CUMMINS INC. 0 0 9 11 10 30
INA-SCHAEFFLER KG 0 0 1 16 13 30
AISAN INDUSTRY CO., LTD. 4 1 9 3 10 27
KAWASAKI JUKOGYO KABUSHIKI KAISHA 1 0 8 11 4 24
TECUMSEH PRODUCTS COMPANY 2 6 5 5 6 24
WALBRO CORPORATION 5 7 9 3 0 24
FEDERAL-MOGUL WORLD WIDE, INC. 2 2 9 7 3 23
ORBITAL ENGINE COMPANY (AUSTRALIA) PTY. LTD. 5 3 6 4 5 23
SUZUKI KABUSHIKI KAISHA 2 4 11 2 4 23
INSTITUT FRANCAIS DU PETROLE 7 2 3 4 6 22
KEIHIN CORPORATION 3 3 6 7 3 22
VOLKSWAGEN AKTIENGESELLSCHAFT 5 2 7 6 2 22
KOKUSAN DENKI CO., LTD 2 3 5 7 4 21
HARLEY-DAVIDSON MOTOR CO., INC. 4 2 6 5 2 19
VOLVO LASTVAGNAR AB 0 9 2 3 5 19
AKTIEBOLAGET ELECTROLUX 4 5 1 6 2 18
MANNESMANN VDO AG 1 8 8 1 0 18
SIEMENS VDO AUTOMOTIVE CORPORATION 0 0 1 9 8 18
MAGNETI MARELLI S.P.A. 2 4 10 1 0 17
MOTOREN-UND TURBINEN-UNION FRIEDRICHSHAFEN GMBH 0 4 1 2 10 17
SOUTHWEST RESEARCH INSTITUTE 2 3 3 5 4 17
DEERE + COMPANY 0 6 4 5 1 16
CHRYSLER MOTORS CORPORATION 13 2 0 0 0 15
KOHLER CO. 2 3 3 2 5 15
KOMATSU LTD. 3 4 3 3 2 15
LUCAS INDUSTRIES PUBLIC LTD. COMPANY 7 7 1 0 0 15
VOLVO CAR CORPORATION AB 0 0 9 6 0 15
AB VOLVO 2 4 3 3 2 14
DOLMAR GMBH 4 3 2 3 2 14
NIPPON SOKEN, INC. 4 3 1 1 5 14
SIEMENS AUTOMOTIVE INC. 0 1 7 5 1 14
HITACHI UNISIA AUTOMOTIVE, LTD. 0 0 0 1 12 13
NGK SPARK PLUG CO., LTD. 1 3 1 7 1 13
HYDRAULIK-RING GMBH 3 4 1 0 4 12
INTERNATIONAL TRUCK AND ENGINE CORP. 0 6 6 0 0 12
MOTORENFABRIK HATZ GMBH + CO. KG 6 3 1 2 0 12
MAHLE GMBH 2 2 0 2 5 11
MECHADYNE PLC 0 7 1 1 2 11
META MOTOREN-UND ENERGIE-TECHNIK GMBH 3 2 1 2 3 11
MITSUBISHI HEAVY INDUSTRIES, LTD. 3 5 2 0 1 11
NAVISTAR INTERNATIONAL TRANSPORTATION CORP. 8 2 1 0 0 11
FORD MOTOR COMPANY 5 1 1 2 1 10
KOMATSU ZENOAH CO. 3 4 2 0 1 10
OUTBOARD MARINE CORPORATION 4 5 1 0 0 10
PIERBURG AG 0 1 3 3 3 10
ROBERT BOSCH CORPORATION 0 1 5 2 2 10
TCG UNITECH AKTIENGESELLSCHAFT 3 6 0 1 0 10
USUI KOKUSAI SANGYO KABUSHIKI KAISHA 0 3 4 1 2 10
AUDI AG 0 2 1 3 3 9
BOMBARDIER-ROTAX GMBH & CO. KG 0 2 2 3 2 9
HILTI AKTIENGESELLSCHAFT 0 0 5 3 1 9
HONEYWELL INTERNATIONAL INC. 0 1 3 3 2 9
ISAD ELECTRONIC SYSTEMS GMBH & CO. KG 6 1 2 0 0 9
KUBOTA CORPORATION 2 2 2 2 1 9
MAGNETI MARELLI FRANCE 1 1 4 0 3 9
PERKINS ENGINES COMPANY LIMITED 1 6 0 0 2 9
SCANIA CV AKTIEBOLAG 0 4 1 2 2 9
WESTPORT RESEARCH INC. 0 3 1 4 1 9
ACCESSIBLE TECHNOLOGIES, INC. 0 0 3 4 1 8
CUMMINS ENGINE COMPANY LIMITED 0 5 1 1 1 8
DAIMLER-BENZ AKTIENGESELLSCHAFT 6 1 1 0 0 8
DESIGN AND MANUFACTURING SOLUTIONS, INC. 1 4 3 0 0 8
DEUTZ AG 4 3 1 0 0 8
MACK TRUCKS, INC. 0 3 4 0 1 8
MAGNETI MARELLI POWERTRAIN S.P.A. 0 0 1 4 3 8
MAHLE VENTILRIEB GMBH 0 2 2 2 2 8
MIKUNI CORPORATION 0 1 0 5 2 8
STANADYNE CORPORATION 0 0 4 2 2 8
GUL & CO DEVELOPMENT AB 7 0 0 0 0 7
HAYES LEMMERZ INTERNATIONAL, INC. 0 4 1 0 2 7
MTD SOUTHWEST, INC. 0 1 3 2 1 7
NIPPON THERMOSTAT CO., LTD. 1 1 3 1 1 7
NTN CORPORATION 2 0 1 1 3 7
STARTING INDUSTRIAL CO., LTD 0 0 0 0 7 7
WARTSILA NSD OY AB 1 2 4 0 0 7
BEHR THERMOT-TRONIK GMBH & CO. 1 0 1 4 0 6
COMPETITION CAMS, INC. 1 4 1 0 0 6
FUJI OOZX INC. 0 2 2 2 0 6
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN 2 1 1 1 1 6
JENBACHER AKTIENGESELLSCHAFT 0 0 2 1 3 6
KABUSHIKI KAISHA MORIC 0 0 0 2 4 6
LUBRIZOL CORPORATION 1 0 2 1 2 6
MTD PRODUCTS INC. 0 1 0 2 3 6
NSK LIMITED 0 2 1 2 1 6
PARKER-HANNIFIN CORPORATION 1 1 1 2 1 6
SAAB AUTOMOBILE AKTIEBOLAG 1 0 0 2 3 6
SAGEM S.A. 0 3 3 0 0 6
SIEMENS AUTOMOTIVE S.A. 1 3 1 0 1 6
STURMAN INDUSTRIES, INC. 1 1 1 2 1 6
UNITED STATES OF AMERICA, ENVIRONMENTAL PROTECTION AGENCY 0 2 1 1 2 6
VOLVO PERSONVAGNAR AB 0 0 5 1 0 6
WOODWARD GOVERNOR COMPANY 1 1 0 0 4 6
AICHI KIKAI KOGYO KABUSHIKI KAISHA 0 4 0 1 0 5
AUTOTRONIC CONTROLS CORPORATION 3 1 0 0 1 5
BOMBARDIER RECREATIONAL PRODUCTS INC. 0 0 0 0 5 5
CLEAN FUEL TECHNOLOGY, INC. 0 0 3 1 1 5
DIESEL TECHNOLOGY COMPANY 4 0 0 1 0 5
FICHT GMBH & CO. KG 3 0 2 0 0 5
KNITE, INC. 1 1 1 2 0 5
KOYO SEIKO COMPANY, LTD. 1 1 1 2 0 5
M.A.N.-B & W DIESEL A/S 1 3 1 0 0 5
MAN NUTZFAHRZEUGE AKTIENGESELLSHAFT 0 0 3 1 1 5
MARUYAMA MFG. CO. INC. 0 1 1 2 1 5
PHILLIPS & TEMRO INDUSTRIES INC. 4 0 0 1 0 5
SWISSAUTO ENGINEERING S.A. 1 2 2 0 0 5
VALEO EQUIPEMENTS ELECTRIQUES MOTEUR 1 1 0 2 1 5


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