Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4951640 | Method of controlling ignition of internal combustion engine | Itsushi Hirukawa, Satoshi Aoki | 1990-08-28 |
| 4927390 | Gas exhaustion device for inboard/outboard engine | Itsushi Hirukawa, Satoshi Aoki, Tsuyoshi Yoshimura, Shigeki Shiozawa | 1990-05-22 |