Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11199226 | Rolling bearing | Junji Murata, Shigeo Kamamoto | 2021-12-14 |
| 11149787 | Thrust roller bearing | Shigeo Kamamoto, Junji Murata | 2021-10-19 |
| 10948012 | Thrust roller bearing | Shigeo Kamamoto, Junji Murata | 2021-03-16 |