Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10610442 | Massage device | Tetsuya Ishikawa, Shinsaku Shimizu | 2020-04-07 |
| 9999564 | Back massaging apparatus | Ken Tamaki, Shinsaku Shimizu | 2018-06-19 |
| 9149409 | Back kneading device and chair-type massage apparatus equipped with the back kneading device | Koichi Numata, Shinsaku Shimizu | 2015-10-06 |
| 8840574 | Massage apparatus | Bolin Wang, Shinsaku Shimizu | 2014-09-23 |
| 8684955 | Back kneading device mounted in chair-type massage apparatus and chair-type massage apparatus equipped with the back kneading device | Ying Liu, Koichi Numata, Shinsaku Shimizu | 2014-04-01 |
| 7951099 | Massage device | Tetsuya Ishikawa | 2011-05-31 |
| 7311684 | Massage device | Tetsuya Ishikawa | 2007-12-25 |