Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11155120 | Stage-corresponding caster device | Kota Ojima | 2021-10-26 |
| 8840481 | Power transmission part, damper mechanism, and flywheel assembly | Kozo Yamamoto, Keisuke Fujioka, Kazuhiko Kawaguchi | 2014-09-23 |
| 8568243 | Flywheel assembly | Kozo Yamamoto, Keisuke Fujioka | 2013-10-29 |
| 8376864 | Damper mechanism | Kozo Yamamoto, Keisuke Fujioka | 2013-02-19 |
| 8066574 | Damper mechanism | Hiroshi Uehara | 2011-11-29 |