Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9187021 | Assist grip | — | 2015-11-17 |
| 8732911 | Assist grip | Takahiro Sugiyama | 2014-05-27 |
| 8408621 | Assist grip | Daisuke Kogiso | 2013-04-02 |
| 8245357 | Assist grip | Shouji Kawakami, Kazuhiro Kawamura, Yoshiyuki Sakuma | 2012-08-21 |
| 8146208 | Assist grip | Shouji Kawakami, Kazuhiro Kawamura | 2012-04-03 |