Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D734632 | Chair | — | 2015-07-21 |
| D716588 | Table | — | 2014-11-04 |
| 8251454 | Backrest of the chair and adaptation device for the same | Hiroaki Tsukiji | 2012-08-28 |
| D599571 | Chair | — | 2009-09-08 |
| D583581 | Chair | — | 2008-12-30 |
| D583580 | Chair | — | 2008-12-30 |
| D567523 | Chair | — | 2008-04-29 |
| D558998 | Chair | — | 2008-01-08 |
| D557027 | Chair | — | 2007-12-11 |
| D543369 | Chair | — | 2007-05-29 |
| D543039 | Chair | — | 2007-05-22 |
| D543040 | Chair | — | 2007-05-22 |
| D543041 | Chair | — | 2007-05-22 |
| D543042 | Chair | — | 2007-05-22 |
| D542549 | Chair | — | 2007-05-15 |