~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 |