Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5375416 | Air-fuel ratio sensor deterioration-detecting device for internal combustion engines | Yoichi Iwata, Toshihiko Sato, Tsuyoshi Takizawa, Takayoshi Nakayama | 1994-12-27 |
| 5325664 | System for determining deterioration of catalysts of internal combustion engines | Toshihiko Sato, Katuhiro Kumagai, Hiroshi Maruyama, Yoichi Iwata, Tsuyoshi Takizawa +8 more | 1994-07-05 |