Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8056536 | Ignition device for internal combustion engine | Kiyotada Nakauchi, Akira Shimoyama, Masayuki Sugiyama | 2011-11-15 |
| 7603982 | Capacitor discharge engine ignition device | Masayuki Sugiyama, Akira Shimoyama | 2009-10-20 |
| 7472688 | Ignition device for internal combustion engine | Kiyotada Nakauchi, Masayuki Sugiyama, Akira Shimoyama | 2009-01-06 |
| 7171948 | Ignition device for internal combustion engine | Akira Shimoyama, Kiyotada Nakauchi, Masayuki Sugiyama | 2007-02-06 |
| 5253626 | Rotational speed control system for internal combustion engine | Hidetoshi Suzuki, Satoshi Hitomi | 1993-10-19 |