Issued Patents 2019
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10260381 | Variable valve mechanism of internal combustion engine | Akira Sugiura | 2019-04-16 |
| 10233790 | Variable valve mechanism of internal combustion engine | Naoki Hiramatsu, Masatoshi Sugiura | 2019-03-19 |
| 10221728 | Variable valve mechanism of internal combustion engine | Hiroyuki Suzuki, Akira Sugiura | 2019-03-05 |
| 10167749 | Variable valve mechanism of internal combustion engine | — | 2019-01-01 |