Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9885417 | Piston ring | Kouhei Sugimoto, Toshikatsu Hayashi, Ryou Obara | 2018-02-06 |
| 9709169 | Piston ring | Toshikatsu Hayashi, Kouhei Sugimoto, Hayato Sasaki | 2017-07-18 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9885417 | Piston ring | Kouhei Sugimoto, Toshikatsu Hayashi, Ryou Obara | 2018-02-06 |
| 9709169 | Piston ring | Toshikatsu Hayashi, Kouhei Sugimoto, Hayato Sasaki | 2017-07-18 |