Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6305336 | Electromagnetic driving device of engine valve for internal combustion engine | Seinosuke Hara, Yoshihiko Yamada, Tsutomu Hibi | 2001-10-23 |
| 6257182 | Electromagnetic drive system for engine valve | Seinosuke Hara, Makoto Nakamura, Yoshihiko Yamada, Tsutomu Hibi, Yoshiaki Miyazato | 2001-07-10 |