Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6125628 | Engine startup air-fuel ratio controller | Yoshiaki Yoshioka, Hatsuo Nagaishi | 2000-10-03 |
| 5946907 | Engine catalyst activation determining device and engine controller related thereto | Hatsuo Nagaishi, Hideaki Takahashi | 1999-09-07 |