Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5684248 | Device for determining the degree of deterioration of a catalyst | — | 1997-11-04 |
| 5655363 | Air-fuel ratio control system for internal combustion engines | Hiroshi Ito, Seiji Hatcho, Tetsuya Kaneko, Tetsu Teshirogi | 1997-08-12 |
| 5605041 | Air-fuel ratio control system for internal combustion engines | Yoshiharu Ave, Takayoshi Nakayama | 1997-02-25 |