Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4393837 | Spark timing control system for an internal combustion engine | Kunihiko Sugihara | 1983-07-19 |
| 4385598 | Engine system | Yasuo Nakajima, Kunihiko Sugihara | 1983-05-31 |
| 4364259 | Vibration sensor for an automotive vehicle engine | Shigeo Muranaka | 1982-12-21 |
| 4337640 | Knocking sensor | Shigeo Muranaka, Kunihiko Sugihara | 1982-07-06 |
| 4289102 | Engine spark timing controlling device | Masaaki Katsumata, Yasuo Takagi, Kenji Yoneda | 1981-09-15 |
| 4282841 | Ignition timing control system for an internal combustion engine | Yasuo Takagi, Masaaki Katsumata, Kenji Yoneda | 1981-08-11 |
| 4210109 | Multi-cylinder internal combustion engine | Yasuo Nakajima, Kunihiko Sugihara, Shinichi Nagumo | 1980-07-01 |
| 4192262 | Control system for varying the amount of scavenging air to be admitted to internal combustion engine | Yasuo Nakajima, Kunihiko Sugihara, Shin-ichi Nagumo | 1980-03-11 |
| 4185599 | Control system for varying the amount of scavenging air to be _admitted to internal combustion engine | Yasuo Nakajima, Kunihiko Sugihara, Shin-ichi Nagumo | 1980-01-29 |