Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9611953 | Hollow poppet valve | Osamu Tsuneishi | 2017-04-04 |
| 8505508 | Phase varying device for engine | Michihiro Kameda, Masayasu Nagado | 2013-08-13 |
| 7992531 | Phase varying apparatus for engine | Koichi Homma, Minoru Shiino | 2011-08-09 |