Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11408490 | Chain tensioner | — | 2022-08-09 |
| 11231091 | Chain tensioner | Eiji Maeno | 2022-01-25 |
| 10107368 | Chain tensioner | Tasuku Furukawa | 2018-10-23 |
| 8221274 | Chain tensioner | Takanobu Sato, Seiji Sato | 2012-07-17 |
| 7766775 | Chain tensioner | Seiji Sato, Satoshi Kitano, Yoshiaki Ryouno | 2010-08-03 |
| 7654924 | Auto-tensioner | Seiji Sato, Satoshi Kitano, Yoshiaki Ryouno | 2010-02-02 |
| 7559863 | Chain tensioner | Seiji Sato, Satoshi Kitano, Yoshiaki Ryouno, Hisashi Hayakawa | 2009-07-14 |