Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4963246 | Oxygen concentration-sensing device | Toyohei Nakajima, Toshiyuki Mieno, Yasuhiro Toyoda | 1990-10-16 |
| 4915813 | Oxygen concentration detecting device | Toyohei Nakajima, Toshiyuki Mieno, Yasuhiro Toyoda, Akira Kato, Toru Yano | 1990-04-10 |
| 4756294 | Air-fuel mixture heating device for use with engines | Hajime Nakayama, Osamu Aoki, Shigetoshi Nishijima, Takuya Sugino | 1988-07-12 |
| 4672940 | Air-fuel mixture flow control structure and method of making the same | Hajime Nakayama, Osamu Aoki, Shigetoshi Nishijima, Takuya Sugino, Shuichi Takagi | 1987-06-16 |