Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7246859 | Chair | Ryo Igarashi, Ken Nakayama, Hiroshi Masunaga | 2007-07-24 |
| 7243993 | Tilting mechanism for a chair and a chair having the same | Ryo Igarashi, Ken Nakayama, Hiroshi Masunaga | 2007-07-17 |
| 7097249 | Tilting mechanism for a chair and chair having the same | Ryo Igarashi, Ken Nakayama, Hiroshi Masunaga | 2006-08-29 |
| 6942300 | Structure for mounting a net member to a frame for a seat or backrest of a chair | Tetsuya Narita, Ryo Igarashi | 2005-09-13 |