Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10227947 | Cylinder head for vehicle engine | Kazuaki Koyama, Yuya Okamoto, Akira Yoshihara, Genki Takahashi | 2019-03-12 |
| 7913660 | Cylinder head | Keisuke Komura, Toshihiko Oka, Kenichi Morishima | 2011-03-29 |
| 7677219 | Cylinder head | Keisuke Komura, Toshihiko Oka, Kenichi Morishima | 2010-03-16 |
| 7107953 | Valve gear of an internal combustion engine | Toshihiko Oka, Tetsushi Nagira, Satoshi Ando, Shinichi Murata, Masanori Tokuhisa | 2006-09-19 |
| 7007646 | Valve gear with cylinder suspending mechanism of an internal combustion engine | Toshihiko Oka, Tetsushi Nagira, Satoshi Ando, Shinichi Murata, Masanori Tokuhisa | 2006-03-07 |
| 6883484 | Rocker shaft | Toshihiko Oka, Masanori Tokuhisa | 2005-04-26 |