Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D793141 | Chair | — | 2017-08-01 |
| D741099 | Chair | Shinpei Totsuka | 2015-10-20 |
| D733446 | Chair | Syouichi Izawa | 2015-07-07 |
| D733445 | Chair | Syouichi Izawa | 2015-07-07 |
| 8991931 | Furniture cloth and chair | Tetsuya Narita | 2015-03-31 |
| 8794701 | Backrest for chair | Ken Nakayama, Kouichirou Wakizono | 2014-08-05 |
| 8777321 | Stretching structure of chair upholstery material | Hiroshi Masunaga, Sayaka Morio | 2014-07-15 |
| D656761 | Chair | Syouichi Izawa | 2012-04-03 |
| D622974 | Chair | — | 2010-09-07 |
| D622073 | Chair | — | 2010-08-24 |
| D622074 | Chair | — | 2010-08-24 |
| D616654 | Chair | — | 2010-06-01 |
| D616655 | Chair | — | 2010-06-01 |
| D615783 | Chair | — | 2010-05-18 |
| D611264 | Chair | — | 2010-03-09 |
| D611261 | Chair | — | 2010-03-09 |
| D605865 | Chair | — | 2009-12-15 |
| D605866 | Chair | — | 2009-12-15 |