Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5257852 | Damper device for an automatic folding chair | Kazuyosh Ohshima, Yojiro Nakayama | 1993-11-02 |
| 5011029 | Coat lift hanger | Seiji Sugasawara, Kazuyoshi Ohshima, Yojiro Nakayama, Tatsuya Hayakawa, Seiichiro Tamura | 1991-04-30 |
| 4938322 | Multi-disc damper using viscous fluid | Seiji Sugasawara, Kazuyoshi Ohshima, Youjirou Nakayama, Tatsuya Hayakawa, Seiichiroh Tamura | 1990-07-03 |
| 4727622 | Hinge | — | 1988-03-01 |
| 4313239 | Hinge mounting plate | — | 1982-02-02 |