Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6557940 | Chair assisting rising movements | Mitsuo Hayashi, Kazumi Okawa | 2003-05-06 |
| 5836645 | Lounger-type massage machine | Ryuji Yamada, Haruo Sugai, Akihide Sugawa, Masamichi Miyaguchi, Masatoshi Dairin +3 more | 1998-11-17 |
| 5813727 | Massaging chair | Akihide Sugawa, Hikoyoshi Hara, Masatoshi Dairin, Fumihiro Nishio | 1998-09-29 |
| 4633159 | Charging circuit | Kaoru Furukawa | 1986-12-30 |