Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5628286 | Valve timing control apparatus for engine | Senji Kato, Nobuhisa Ohkawa, Shigeru Sone, Tadahisa Naganawa, Yoshiya Yamashita +2 more | 1997-05-13 |
| 5483930 | Valve timing control device | Akihiko Takenaka, Michio Adachi | 1996-01-16 |
| 5299911 | Electric pitch control apparatus for variable-pitch propeller | — | 1994-04-05 |
| 5284418 | Electric pitch control apparatus for variable pitch propeller capable of controlling the pitch angle based instantaneous operational conditions of the propeller | — | 1994-02-08 |
| 5209640 | Pitch control apparatus for variable pitch propeller | — | 1993-05-11 |
| 4721073 | Compression ratio changing device using an eccentric bearing for an internal combustion engine | Takao Naruoka | 1988-01-26 |
| 4687348 | Device for locking/unlocking rotation of an eccentric bearing used in a compression ratio changing mechanism of an internal combustion engine | Takao Naruoka, Touru Ichimiya | 1987-08-18 |