Issued Patents All Time
Showing 51–75 of 77 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5501186 | Engine valve control mechanism | Akira Hidaka, Yoshihiko Yamada | 1996-03-26 |
| 5494009 | Valve control device for internal combustion engine | Yosihiko Yamada | 1996-02-27 |
| 5452694 | Hydraulic variable lift engine valve gear | — | 1995-09-26 |
| 5445116 | Hydraulic variable lift engine valve gear | — | 1995-08-29 |
| 5365896 | Cam shaft assembly for use in internal combustion engine | Yoshihiko Yamada, Shoji Morita, Yukio Yamakawa, Akira Hidaka | 1994-11-22 |
| 5333579 | Control device for controlling intake and exhaust valves of internal combustion engine | Yosihiko Yamada, Makoto Nakamura | 1994-08-02 |
| 5297516 | Valve actuating apparatus | — | 1994-03-29 |
| 5263442 | Valve timing control apparatus | — | 1993-11-23 |
| 5228417 | Valve timing control system of internal combustion engine | — | 1993-07-20 |
| 5205248 | Intake- and/or exhaust-valve timing control system for internal combustion engines | Seiji Tsuruta | 1993-04-27 |
| 5203289 | Variable timing mechanism | Shoji Morita, Yoshihiko Yamada | 1993-04-20 |
| 5197421 | Valve timing control apparatus | — | 1993-03-30 |
| 5195471 | Valve timing control system of internal combustion engine | — | 1993-03-23 |
| 5189998 | Valve mechanism of internal combustion engine | — | 1993-03-02 |
| 5183015 | Valve operating apparatus | Shoji Morita, Yoshihiko Yamada | 1993-02-02 |
| 5125373 | Oil passage structure for rocker-arm shaft for internal combustion engine | Yoshihiko Yamada, Shoji Morita | 1992-06-30 |
| 5085182 | Variable valve timing rocker arm arrangement for internal combustion engine | Makoto Nakamura, Shigeru Sakuragi, Yutaka Matayoshi, Keiichi Maekawa, Shoji Morita | 1992-02-04 |
| 4934347 | Variable compression piston arrangement for internal combustion engine | Seiji Suga, Tatsuyuki Matsuya, Hiromichi Ofuji, Takayuki Arai, Takaharu Goto | 1990-06-19 |
| 4809650 | Variable compression control arrangement for internal combustion engine | Takayuki Arai, Hiromichi Ofuji, Takaharu Goto, Takehisa Kondo, Seiji Suga +2 more | 1989-03-07 |
| 4759321 | Valve timing arrangement for internal combustion engine having multiple inlet valves per cylinder | Yasuo Matsumoto, Hiromichi Ofuji | 1988-07-26 |
| 4708101 | Driving apparatus for intake and exhaust valves of internal combustion engine | Hiromichi Ofuji, Kazuyuki Miisyo, Yasuo Matsumoto, Manabu Kato | 1987-11-24 |
| 4567861 | Engine valve operating system for internal combustion engine | Yasuo Matsumoto, Yutaka Matayoshi | 1986-02-04 |
| 4539951 | Variable valve timing mechanism | Kazuyuki Miisho, Yasuo Matsumoto, Yasuo Yoshikawa | 1985-09-10 |
| 4526142 | Variable valve timing arrangement for an internal combustion engine or the like | Shunichi Aoyama, Kazuyuki Miisho | 1985-07-02 |
| 4503818 | Variable valve timing arrangement for an internal combustion engine or the like | Kazuyuki Miisho | 1985-03-12 |