Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8056536 | Ignition device for internal combustion engine | Akira Shimoyama, Yasukazu Hatano, Masayuki Sugiyama | 2011-11-15 |
| 7472688 | Ignition device for internal combustion engine | Masayuki Sugiyama, Yasukazu Hatano, Akira Shimoyama | 2009-01-06 |
| 7171948 | Ignition device for internal combustion engine | Akira Shimoyama, Yasukazu Hatano, Masayuki Sugiyama | 2007-02-06 |