Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10280817 | Variable valve mechanism of internal combustion engine | Akira Sugiura | 2019-05-07 |
| 10240489 | Variable valve mechanism of internal combustion engine | Akira Sugiura | 2019-03-26 |
| 9879577 | Variable valve mechanism of internal combustion engine | Koki Yamaguchi, Naoki Hiramatsu, Masatoshi Sugiura, Shinichiro Kikuoka, Masaaki Tani +1 more | 2018-01-30 |
| 9624795 | Variable valve mechanism of internal combustion engine | Akira Sugiura | 2017-04-18 |
| 9181826 | Variable valve mechanism of internal combustion engine | Akira Sugiura, Koki Yamaguchi, Naoki Hiramatsu | 2015-11-10 |
| 8960144 | Variable valve mechanism of internal combustion engine | Naoki Hiramatsu, Koki Yamaguchi, Akira Sugiura | 2015-02-24 |