Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5611772 | Air massage device | Yoshikiyo Yamasaki | 1997-03-18 |
| D374560 | Massaging chair | Yoshikiyo Yamasaki | 1996-10-15 |
| D372802 | Massage chair | Yoshikiyo Yamasaki | 1996-08-20 |
| D372801 | Massage chair | Yoshikiyo Yamasaki | 1996-08-20 |
| 5520435 | Reclining legless chair with interlocking headrest | Yoshikiyo Yamasaki, Masaki Wada | 1996-05-28 |
| D364928 | Low frequency muscle relaxer | Yoshikiyo Yamasaki | 1995-12-05 |
| 5460598 | Polyfunctional automatic massager of chair type | Yoshikiyo Yamasaki | 1995-10-24 |
| 5356369 | Portable vibration finger pressure massager | Yoshikiyo Yamasaki | 1994-10-18 |
| 5352186 | Finger pressure device | Yoshikiyo Yamasaki | 1994-10-04 |
| D350205 | Combined low frequency muscle relaxer and storage case | Yoshikiyo Yamasaki | 1994-08-30 |
| D349772 | Massager | Yoshikiyo Yamasaki | 1994-08-16 |
| 5247925 | Chair for office work with vibration structure | Yoshikiyo Yamasaki | 1993-09-28 |
| D337642 | Low-frequency muscle relaxer | Yoshikiyo Yamasaki | 1993-07-20 |
| D336999 | Massaging chair | Yoshikiyo Yamasaki | 1993-07-06 |
| D336167 | Massaging chair | Yoshikiyo Yamasaki | 1993-06-08 |
| 5188138 | Walking stick with wheels | Yoshikiyo Yamasaki | 1993-02-23 |
| 5183034 | Portable vibration finger pressure massager | Yoshikiyo Yamasaki | 1993-02-02 |