~Individually Owned Patent |
159 |
135 |
129 |
195 |
148 |
766 |
ROBERT BOSCH GMBH |
66 |
46 |
80 |
89 |
121 |
402 |
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) |
63 |
61 |
48 |
103 |
100 |
375 |
TOYOTA JIDOSHA K.K. |
84 |
76 |
45 |
71 |
58 |
334 |
FORD GLOBAL TECHNOLOGIES, INC. |
43 |
51 |
52 |
82 |
81 |
309 |
CATERPILLAR INC. |
32 |
34 |
73 |
52 |
67 |
258 |
NISSAN MOTOR COMPANY, LIMITED |
15 |
40 |
48 |
48 |
44 |
195 |
SANSHIN KOGYO KABUSHIKI KAISHA |
40 |
36 |
37 |
34 |
40 |
187 |
YAMAHA HATSUDOKI KABUSHIKI KAISHA, YAMAHA MOTOR CO., LTD. |
72 |
29 |
35 |
27 |
19 |
182 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
14 |
23 |
29 |
55 |
39 |
160 |
DENSO CORPORATION |
20 |
23 |
36 |
28 |
39 |
146 |
HITACHI, LTD |
21 |
21 |
30 |
30 |
40 |
142 |
DAIMLER-CHRYSLER AKTIENGESELLSCHAFT |
0 |
13 |
41 |
45 |
32 |
131 |
DELPHI TECHNOLOGIES, INC. |
0 |
0 |
5 |
39 |
80 |
124 |
UNISIA JECS CORPORATION |
16 |
17 |
22 |
27 |
31 |
113 |
CUMMINS ENGINE CO., INC. |
22 |
22 |
25 |
17 |
7 |
93 |
INA WALZLAGER SCHAEFFLER OHG |
6 |
19 |
20 |
25 |
23 |
93 |
GENERAL MOTORS CORPORATION |
19 |
23 |
21 |
16 |
12 |
91 |
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA |
28 |
26 |
12 |
5 |
8 |
79 |
SIEMENS AKTIENGESELLSCHAFT |
6 |
14 |
20 |
19 |
19 |
78 |
SIEMENS CANADA LTD. |
1 |
16 |
12 |
24 |
19 |
72 |
DAIMLER-BENZ AKTIENGESELLSCHAFT |
38 |
25 |
6 |
1 |
1 |
71 |
SUZUKI MOTOR CORPORATION |
6 |
22 |
14 |
17 |
10 |
69 |
ISUZU MOTORS LIMITED |
8 |
7 |
12 |
20 |
11 |
58 |
SIEMENS AUTOMOTIVE CORPORATION |
8 |
5 |
11 |
13 |
17 |
54 |
BRUNSWICK CORPORATION |
10 |
13 |
11 |
9 |
8 |
51 |
FEV MOTORENTECHNIK GMBH & CO. KG |
10 |
11 |
7 |
9 |
14 |
51 |
CHRYSLER MOTORS CORPORATION |
15 |
20 |
13 |
2 |
0 |
50 |
DAIMLERCHRYSLER CORPORATION |
0 |
4 |
12 |
24 |
10 |
50 |
AISIN SEIKI KABUSHIKI KAISHA |
8 |
11 |
13 |
7 |
9 |
48 |
DETROIT DIESEL CORPORATION |
3 |
3 |
11 |
12 |
19 |
48 |
FILTERWERK MANN + HUMMEL GMBH |
1 |
5 |
12 |
8 |
22 |
48 |
VISTEON GLOBAL TECHNOLOGIES, INC. |
0 |
0 |
2 |
17 |
23 |
42 |
KIORITZ CORPORATION |
2 |
15 |
8 |
6 |
8 |
39 |
MAZDA MOTOR CORPORATION |
5 |
4 |
12 |
9 |
8 |
38 |
BAYERISCHE MOTOREN WERKE AG |
6 |
3 |
7 |
10 |
11 |
37 |
HYUNDAI MOTOR CO., LTD. |
7 |
8 |
6 |
6 |
10 |
37 |
DIESEL ENGINE RETARDERS, INC. |
6 |
3 |
9 |
10 |
8 |
36 |
PORSCHE AG |
5 |
7 |
5 |
6 |
13 |
36 |
EATON CORPORATION |
2 |
12 |
6 |
12 |
3 |
35 |
FUJI JUKOGYO KABUSHIKI KAISHA |
10 |
8 |
4 |
4 |
7 |
33 |
WALBRO CORPORATION |
6 |
6 |
5 |
7 |
9 |
33 |
BORGWARNER INC. |
0 |
0 |
3 |
11 |
16 |
30 |
LUCAS INDUSTRIES PUBLIC LTD. COMPANY |
9 |
5 |
7 |
7 |
1 |
29 |
NIPPONDENSO CO., LTD. |
22 |
2 |
3 |
1 |
0 |
28 |
ANDREAS STIHL AG & CO. |
1 |
1 |
5 |
10 |
10 |
27 |
GENERAL ELECTRIC COMPANY |
1 |
1 |
3 |
16 |
5 |
26 |
ORBITAL ENGINE COMPANY (AUSTRALIA) PTY. LTD. |
6 |
6 |
5 |
3 |
6 |
26 |
BOMBARDIER MOTOR CORPORATION OF AMERICA |
0 |
0 |
0 |
7 |
17 |
24 |
BRIGGS + STRATTON CORPORATION |
4 |
1 |
6 |
8 |
5 |
24 |
C.R.F. SOCIETA CONSORTILE PER AZIONI |
6 |
2 |
7 |
5 |
4 |
24 |
SUZUKI KABUSHIKI KAISHA |
5 |
2 |
2 |
4 |
11 |
24 |
OUTBOARD MARINE CORPORATION |
7 |
6 |
4 |
5 |
1 |
23 |
AVL LIST GMBH |
1 |
5 |
5 |
9 |
2 |
22 |
DANA CORPORATION |
1 |
1 |
4 |
11 |
5 |
22 |
FORD MOTOR COMPANY |
9 |
6 |
5 |
1 |
1 |
22 |
AKTIEBOLAGET ELECTROLUX |
7 |
4 |
4 |
5 |
1 |
21 |
VOLKSWAGEN AKTIENGESELLSCHAFT |
2 |
5 |
5 |
2 |
7 |
21 |
AISAN INDUSTRY CO., LTD. |
4 |
2 |
4 |
1 |
9 |
20 |
INSTITUT FRANCAIS DU PETROLE |
6 |
2 |
7 |
2 |
3 |
20 |
MAGNETI MARELLI S.P.A. |
3 |
1 |
2 |
4 |
10 |
20 |
INA WALZLAGER SCHAEFFLER KG |
15 |
4 |
0 |
0 |
0 |
19 |
NAVISTAR INTERNATIONAL TRANSPORTATION CORP. |
2 |
6 |
8 |
2 |
1 |
19 |
TECUMSEH PRODUCTS COMPANY |
1 |
4 |
2 |
6 |
5 |
18 |
MANNESMANN VDO AG |
0 |
0 |
1 |
8 |
8 |
17 |
MITSUBISHI HEAVY INDUSTRIES CO., LTD. |
0 |
6 |
3 |
5 |
2 |
16 |
SOUTHWEST RESEARCH INSTITUTE |
5 |
3 |
2 |
3 |
3 |
16 |
FEDERAL-MOGUL WORLD WIDE, INC. |
0 |
2 |
2 |
2 |
9 |
15 |
FUJI OOZX INC. |
5 |
6 |
0 |
2 |
2 |
15 |
KOMATSU LTD. |
2 |
3 |
3 |
4 |
3 |
15 |
NIPPON SOKEN, INC. |
4 |
3 |
4 |
3 |
1 |
15 |
AB VOLVO |
2 |
3 |
2 |
4 |
3 |
14 |
HARLEY-DAVIDSON MOTOR CO., INC. |
0 |
2 |
4 |
2 |
6 |
14 |
INTERNATIONAL ENGINE INTELLECTUAL PROPERTY COMPANY, L.L.C. |
0 |
0 |
0 |
0 |
13 |
13 |
MOTORENFABRIK HATZ GMBH + CO. KG |
1 |
2 |
6 |
3 |
1 |
13 |
INTERNATIONAL TRUCK AND ENGINE CORP. |
0 |
0 |
0 |
6 |
6 |
12 |
ISUZU CERAMICS RESEARCH INSTITUTE CO., LTD. |
5 |
3 |
3 |
0 |
1 |
12 |
KAWASAKI JUKOGYO KABUSHIKI KAISHA |
0 |
3 |
1 |
0 |
8 |
12 |
KEIHIN CORPORATION |
0 |
0 |
3 |
3 |
6 |
12 |
KOHLER CO. |
3 |
1 |
2 |
3 |
3 |
12 |
KOKUSAN DENKI CO., LTD |
0 |
2 |
2 |
3 |
5 |
12 |
DEERE + COMPANY |
0 |
1 |
0 |
6 |
4 |
11 |
VOLVO LASTVAGNAR AB |
0 |
0 |
0 |
9 |
2 |
11 |
ZEXEL CORPORATION |
3 |
5 |
2 |
1 |
0 |
11 |
DEUTZ AG |
0 |
2 |
4 |
3 |
1 |
10 |
DOLMAR GMBH |
1 |
0 |
4 |
3 |
2 |
10 |
FUTABA DENSHI KOGYO KABUSHIKI KAISHA |
3 |
4 |
1 |
2 |
0 |
10 |
M.A.N.-B & W DIESEL A/S |
4 |
1 |
1 |
3 |
1 |
10 |
META MOTOREN-UND ENERGIE-TECHNIK GMBH |
2 |
2 |
3 |
2 |
1 |
10 |
NGK SPARK PLUG CO., LTD. |
3 |
2 |
1 |
3 |
1 |
10 |
SIEMENS AUTOMOTIVE S.A. |
4 |
1 |
1 |
3 |
1 |
10 |
SIEMENS VDO AUTOMOTIVE, INC. |
0 |
0 |
0 |
0 |
10 |
10 |
TCG UNITECH AKTIENGESELLSCHAFT |
0 |
1 |
3 |
6 |
0 |
10 |
CUMMINS INC. |
0 |
0 |
0 |
0 |
9 |
9 |
ISAD ELECTRONIC SYSTEMS GMBH & CO. KG |
0 |
0 |
6 |
1 |
2 |
9 |
KOMATSU ZENOAH CO. |
0 |
0 |
3 |
4 |
2 |
9 |
KUBOTA CORPORATION |
2 |
1 |
2 |
2 |
2 |
9 |
PHILLIPS & TEMRO INDUSTRIES INC. |
1 |
4 |
4 |
0 |
0 |
9 |
VOLVO CAR CORPORATION AB |
0 |
0 |
0 |
0 |
9 |
9 |
BEHR GMBH & CO. |
3 |
2 |
0 |
3 |
0 |
8 |
DESIGN AND MANUFACTURING SOLUTIONS, INC. |
0 |
0 |
1 |
4 |
3 |
8 |
HYDRAULIK-RING GMBH |
0 |
0 |
3 |
4 |
1 |
8 |
MAGNETI MARELLI FRANCE |
0 |
2 |
1 |
1 |
4 |
8 |
MAHLE GMBH |
2 |
2 |
2 |
2 |
0 |
8 |
MECHADYNE PLC |
0 |
0 |
0 |
7 |
1 |
8 |
MOTOREN-UND TURBINEN-UNION FRIEDRICHSHAFEN GMBH |
3 |
0 |
0 |
4 |
1 |
8 |
PERKINS ENGINES COMPANY LIMITED |
0 |
1 |
1 |
6 |
0 |
8 |
PIERBURG AG |
4 |
2 |
0 |
0 |
2 |
8 |
SCANIA CV AKTIEBOLAG |
2 |
1 |
0 |
4 |
1 |
8 |
SIEMENS AUTOMOTIVE INC. |
0 |
0 |
0 |
1 |
7 |
8 |
SIEMENS ELECTRIC LIMITED |
7 |
1 |
0 |
0 |
0 |
8 |
STANADYNE AUTOMOTIVE CORP. |
2 |
2 |
2 |
0 |
2 |
8 |
TOYODA JIDOSHOKKI SEISAKUSHO KABUSHIKI KAISHA |
3 |
2 |
2 |
1 |
0 |
8 |
COMPETITION CAMS, INC. |
0 |
1 |
1 |
4 |
1 |
7 |
FICHT GMBH & CO. KG |
0 |
2 |
3 |
0 |
2 |
7 |
GUL & CO DEVELOPMENT AB |
0 |
0 |
7 |
0 |
0 |
7 |
MACK TRUCKS, INC. |
0 |
0 |
0 |
3 |
4 |
7 |
ROBERT BOSCH CORPORATION |
0 |
1 |
0 |
1 |
5 |
7 |
USUI KOKUSAI SANGYO KABUSHIKI KAISHA |
0 |
0 |
0 |
3 |
4 |
7 |
VALEO EQUIPEMENTS ELECTRIQUES MOTEUR |
1 |
4 |
1 |
1 |
0 |
7 |
WARTSILA NSD OY AB |
0 |
0 |
1 |
2 |
4 |
7 |
WESTPORT RESEARCH INC. |
1 |
2 |
0 |
3 |
1 |
7 |
ALLIED-SIGNAL INC. |
0 |
2 |
3 |
1 |
0 |
6 |
AUDI AG |
2 |
1 |
0 |
2 |
1 |
6 |
CUMMINS ENGINE COMPANY LIMITED |
0 |
0 |
0 |
5 |
1 |
6 |
DIESEL TECHNOLOGY COMPANY |
2 |
0 |
4 |
0 |
0 |
6 |
HITACHI CONSTRUCTION MACHINERY CO., LTD. |
1 |
2 |
1 |
2 |
0 |
6 |
J. M. VOITH TURBO GMBH & CO. KG |
4 |
1 |
0 |
1 |
0 |
6 |
MECEL AB |
3 |
1 |
2 |
0 |
0 |
6 |
NIPPON PISTON RING CO., LTD. |
1 |
2 |
1 |
2 |
0 |
6 |
NIPPON THERMOSTAT CO., LTD. |
0 |
1 |
1 |
1 |
3 |
6 |
NORTHROP GRUMMAN CORPORATION |
3 |
1 |
0 |
1 |
1 |
6 |
SAGEM S.A. |
0 |
0 |
0 |
3 |
3 |
6 |
UNITED STATES OF AMERICA, NATIONAL AERONAUTICS AND SPACE ADMINISTRATION |
1 |
1 |
4 |
0 |
0 |
6 |
VDO ADOLF SCHINDLING AG |
5 |
0 |
1 |
0 |
0 |
6 |
WOODWARD GOVERNOR COMPANY |
2 |
2 |
1 |
1 |
0 |
6 |
HAYES LEMMERZ INTERNATIONAL, INC. |
0 |
0 |
0 |
4 |
1 |
5 |
HILTI AKTIENGESELLSCHAFT |
0 |
0 |
0 |
0 |
5 |
5 |
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN |
0 |
1 |
2 |
1 |
1 |
5 |
KIA MOTORS CORP. |
5 |
0 |
0 |
0 |
0 |
5 |
MAN B&W DIESEL AKTIENGESELLSCHAFT |
0 |
3 |
1 |
1 |
0 |
5 |
OY WARTSILA DIESEL INTERNATIONAL LTD. |
3 |
2 |
0 |
0 |
0 |
5 |
R. E. PHELON COMPANY, INC. |
3 |
2 |
0 |
0 |
0 |
5 |
SWISSAUTO ENGINEERING S.A. |
0 |
0 |
1 |
2 |
2 |
5 |
U.S. PHILIPS CORPORATION |
2 |
3 |
0 |
0 |
0 |
5 |
UNITED STATES OF AMERICA, ARMY |
1 |
0 |
2 |
1 |
1 |
5 |
VOLVO PERSONVAGNAR AB |
0 |
0 |
0 |
0 |
5 |
5 |