Issued Patents All Time
Showing 26–50 of 77 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6390041 | Variable-valve-actuation apparatus for internal combustion engine | Makoto Nakamura, Keisuke Takeda | 2002-05-21 |
| 6340010 | Valve operating device for internal combustion engine with variable valve timing and valve-lift characteristic mechanism | Makoto Nakamura, Yoshihiko Yamada | 2002-01-22 |
| 6305336 | Electromagnetic driving device of engine valve for internal combustion engine | Katsuhisa Todoroki, Yoshihiko Yamada, Tsutomu Hibi | 2001-10-23 |
| 6257182 | Electromagnetic drive system for engine valve | Makoto Nakamura, Yoshihiko Yamada, Tsutomu Hibi, Katsuhisa Todoroki, Yoshiaki Miyazato | 2001-07-10 |
| 6216653 | Electromagnetic valve actuator for a valve of an engine | Yohji Okada | 2001-04-17 |
| 6123053 | Variable valve actuation apparatus for internal combustion engines | Makoto Nakamura, Tetsuro Goto, Yoshihiko Yamada, Keisuke Takeda | 2000-09-26 |
| 6085704 | Electromagnetically operating actuator for intake and/or exhaust valves | — | 2000-07-11 |
| 6055949 | Variable valve actuator apparatus | Makoto Nakamura, Yoshihiko Yamada, Keisuke Takeda, Shinichi Takemura | 2000-05-02 |
| 6041746 | Variable valve actuation apparatus | Shinichi Takemura, Makoto Nakamura, Yoshihiko Yamada, Keisuke Takeda, Tetsuro Goto | 2000-03-28 |
| 6029618 | Variable valve actuation apparatus | Makoto Nakamura, Shinichi Takemura | 2000-02-29 |
| 5996540 | Variable valve timing and lift system | — | 1999-12-07 |
| 5988125 | Variable valve actuation apparatus for engine | Yoshihiko Yamada, Keisuke Takeda, Tsutomu Hibi, Akira Ohnuki, Shunichi Aoyama +5 more | 1999-11-23 |
| 5924334 | Device for moving cam relative to its driving shaft | Akira Hidaka, Yoshihiko Yamada, Shinichi Takemura | 1999-07-20 |
| 5794576 | Engine cylinder valve controlling apparatus | Nobutaka Hayashi, Seiji Tsuruta, Takanori Sawada | 1998-08-18 |
| 5722356 | Camshaft phase changing device | — | 1998-03-03 |
| 5709179 | Engine cylinder valve control system | Akira Hidaka | 1998-01-20 |
| 5701857 | Cylinder valve operating system | — | 1997-12-30 |
| 5687681 | Phase changing mechanism for camshaft of internal combustion engine | — | 1997-11-18 |
| 5682847 | Valve actuating device for engine | — | 1997-11-04 |
| 5622145 | Cylinder valve operating apparatus | — | 1997-04-22 |
| 5592857 | Variable camshaft phaser | — | 1997-01-14 |
| 5592908 | Engine cylinder valve control system | Akira Hidaka | 1997-01-14 |
| 5564373 | Cylinder valve drive for internal combustion engine | — | 1996-10-15 |
| 5557983 | Device for moving cam relative to its driving shaft | Yosihiko Yamada | 1996-09-24 |
| 5553573 | Valve duration control system for four-cycle engine | Naoki Tomisawa | 1996-09-10 |