Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4502441 | Input/output unit modifiable engine ignition control apparatus | Yoshiaki Hirosawa, Masahiko Fujii | 1985-03-05 |
| 4499875 | Control unit modifiable engine ignition control apparatus | Yoshiaki Hirosawa, Masahiko Fujii | 1985-02-19 |
| 4494518 | Engine ignition interpolation apparatus | Yoshiaki Hirosawa | 1985-01-22 |
| 4457286 | Engine ignition system | Masahiko Fujii, Yoshiaki Hirosawa | 1984-07-03 |