Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7328677 | Plasma-jet spark plug and ignition system | Katsunori Hagiwara, Satoshi Nagasawa | 2008-02-12 |
| 7305954 | Plasma-jet spark plug and ignition system | Katsunori Hagiwara, Satoshi Nagasawa, Toru Nakamura, Tomoaki Kato, Yuichi Yamada | 2007-12-11 |