Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9752648 | Toothed belt | Keiji Sakamoto, Masanao Sakamoto | 2017-09-05 |
| 9353827 | Toothed belt | Mitsuhiro Yamada, Yohei Harada, Akira Terasaki, Kaoru Shimamura | 2016-05-31 |
| 9140329 | Transmission belt | Mitsuhiro Yamada, Keiji Sakamoto | 2015-09-22 |