Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10477848 | Spool brake device | Akira Niitsuma, Yuichiro Ishikawa | 2019-11-19 |
| 10426152 | Spool brake device | Akira Niitsuma, Yuichiro Ishikawa | 2019-10-01 |
| 10182563 | Spool for dual-bearing reel | Akira Niitsuma, Ken'ichi Kawasaki | 2019-01-22 |
| 9661834 | Dual-bearing reel | Atsushi Kawamata | 2017-05-30 |
| 9629349 | Dual-bearing reel | Kunio Takechi | 2017-04-25 |