Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4923028 | Reverse driving device for an autobicycle | Shoji Yamashita, Atsuo Ohta | 1990-05-08 |
| 4917056 | Valve operation control system in internal combustion engine | Toru Yagi, Kaname Tokita, Yoshihiro Fujiyoshi | 1990-04-17 |
| 4869332 | Reverse drive for small vehicles | Haruyasu Fujita, Kouichi Hikichi, Morio Sato, Yoshiaki Hirakata, Toshifumi Ito | 1989-09-26 |
| 4846128 | Ignition timing control system for internal combustion engine | Shizuo Yagi, Makoto Kawai, Yorihisa Yamamoto, Haruhiko Yoshikawa, Kenichi Nakamura | 1989-07-11 |
| 4763538 | Reverse drive for small vehicles | Haruyasu Fujita, Toshifumi Ito | 1988-08-16 |
| 4748952 | Ignition timing control system for internal combustion engine | Shizuo Yagi, Makoto Kawai, Yorihisa Yamamoto, Haruhiko Yoshikawa, Kenichi Nakamura | 1988-06-07 |
| 4745902 | Ignition timing control method for internal combustion engine | Shizuo Yagi, Makoto Kawai, Yorihisa Yamamoto, Haruhiko Yoshikawa, Kenichi Nakamuna | 1988-05-24 |
| 4741310 | Ignition timing control system for internal combustion engine | Shizuo Yagi, Makoto Kawai, Yorihisa Yamamoto, Haruhiko Yoshikawa, Kenichi Nakamura | 1988-05-03 |
| 4694799 | Ignition timing control system for internal combustion engines | Shizuo Yagi, Makoto Kawai, Isao Fujii | 1987-09-22 |
| 4502441 | Input/output unit modifiable engine ignition control apparatus | Hiroomi Katayama, Masahiko Fujii | 1985-03-05 |
| 4499875 | Control unit modifiable engine ignition control apparatus | Hiroomi Katayama, Masahiko Fujii | 1985-02-19 |
| 4494518 | Engine ignition interpolation apparatus | Hiroomi Katayama | 1985-01-22 |
| 4485784 | An engine ignition control circuit having a failsafe for a crank angle sensor | Masahiko Fujii | 1984-12-04 |
| 4457286 | Engine ignition system | Hiroomi Katayama, Masahiko Fujii | 1984-07-03 |