Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE37043 | Layable seat | — | 2001-02-06 |
| 6055780 | Retractable stairs-like stand | — | 2000-05-02 |
| 6000174 | Retractable stairs-like stand | — | 1999-12-14 |
| 5803546 | Turning mechanism for chair seat | — | 1998-09-08 |
| D396967 | Seating unit | — | 1998-08-18 |
| 5700052 | Chair for an acoustically designed building | Takeshi Sakai, Fukushi Kawakami | 1997-12-23 |
| 5685608 | Folding seat and seating system having folding seat | — | 1997-11-11 |
| D370791 | Folding chair unit | — | 1996-06-18 |
| D352400 | Folding chair unit | — | 1994-11-15 |
| 5328239 | Flip-up type seat | — | 1994-07-12 |
| 5328238 | Layable seat | — | 1994-07-12 |
| 5087096 | Apparatus for displacing extensible/contractible board for chair in case of emergency | — | 1992-02-11 |
| 4932718 | Coupled chair unit convertible to a chair mode and to a desk mode | — | 1990-06-12 |