Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11371414 | Exhaust system for engine | Hiroki Oso, Hideyuki Koyama, Yoshinori Tanaka, Kenji Okamoto | 2022-06-28 |
| 11261780 | Engine equipped with supercharger | Hiroki Oso, Shingo Matsunobu, Yoshinori Tanaka, Ayako Sakurai | 2022-03-01 |
| 10982576 | Engine that includes blow-by-gas returning system | Hiroki Oso, Akira Tanaka, Hideyuki Koyama, Rina KANEKO | 2021-04-20 |
| 10815911 | Engine stopping device | Akira Tanaka, Hiroki Oso, Yoshinori Tanaka, Hideyuki Koyama, Takahiro Yamazaki | 2020-10-27 |