Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5375416 | Air-fuel ratio sensor deterioration-detecting device for internal combustion engines | Yoichi Iwata, Yasunari Seki, Tsuyoshi Takizawa, Takayoshi Nakayama | 1994-12-27 |
| 5325664 | System for determining deterioration of catalysts of internal combustion engines | Yasunari Seki, Katuhiro Kumagai, Hiroshi Maruyama, Yoichi Iwata, Tsuyoshi Takizawa +8 more | 1994-07-05 |
| 5305724 | Evaporative fuel control unit for internal combustion engine | Masataka Chikamatsu, Shigetaka Kuroda, Kazutomo Sawamura, Takayoshi Nakayama | 1994-04-26 |