Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4739740 | Internal combustion engine air-fuel ratio feedback control method functioning to compensate for aging change in output characteristic of exhaust gas concentration sensor | Eiji Kishida, Takeo Kiuchi, Eitetsu Akiyama | 1988-04-26 |