Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6412460 | Valve operating system in internal combustion engine | Toshiyuki Sato, Toshihiro Oikawa, Mamoru Kosuge, Yutaka Otobe | 2002-07-02 |
| 5065709 | Valve operating system for internal combustion engine | Yasutoshi Ito, Fuminori Kawashima | 1991-11-19 |
| 4485770 | Material for valve-actuating mechanism of internal combustion engine | Tsutomu Saka, Hiroyuki Endo, Yutaka Ikenoue | 1984-12-04 |