Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11019928 | Armrest and chair | Hiroshi Masunaga, Ryo Igarashi, Syouichi Izawa | 2021-06-01 |
| 10368645 | Chair and backrest for chair | Alexander Hurford | 2019-08-06 |
| 9603451 | Height adjustment device in fixture, and armrest device for chair provided with height adjustment device | Hiroshi Masunaga, Youichirou Oda, Alexander Hurford | 2017-03-28 |