Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6769404 | Combustion control system for spark-ignition internal combustion engine with variable piston strike characteristic mechanism and variable valve operating mechanism | Shunichi Aoyama | 2004-08-03 |
| 6732682 | Control system and method for an internal combustion engine | Shunichi Aoyama, Kenshi Ushijima, Ryosuke Hiyoshi | 2004-05-11 |
| 6729273 | Piston actuation system of V-type engine with variable compression ratio mechanism | Shunichi Aoyama, Hiroya Fujimoto | 2004-05-04 |
| 6684828 | Variable compression ratio mechanism for reciprocating internal combustion engine | Kenshi Ushijima, Shunichi Aoyama, Ryosuke Hiyoshi, Yoshiaki Tanaka | 2004-02-03 |
| 6684833 | Variable valve mechanism of internal combustion engine | Shinichi Takemura, Yoshiaki Miyazato | 2004-02-03 |