Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5813727 | Massaging chair | Akihide Sugawa, Masatoshi Dairin, Hironobu Sakaue, Fumihiro Nishio | 1998-09-29 |
| 5792080 | Massaging apparatus having self-adjusting constant strength and non-adjust strength modes | Kazumi Ookawa, Masatoshi Dairin, Haruo Sugai | 1998-08-11 |
| 4686967 | Rocking massage chair | Koichi Hashimoto, Haruo Sugai, Norio Yamada | 1987-08-18 |
| 4561326 | Friction drive planetary roller type speed reducer | Takafumi Hamabe, Hirozo Imai | 1985-12-31 |
| 4541305 | Speed reducer | Takafumi Hamabe, Hirozo Imai | 1985-09-17 |
| 4475285 | Electric shaver having improved hair disposal system | Hirozo Imai, Youji Iguchi | 1984-10-09 |
| 4363169 | Electric shaver | Sataro Nasu, Kouichi Iwanaga | 1982-12-14 |