Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9138906 | Scoring device for gypsum board production device | — | 2015-09-22 |
| 8382923 | Apparatus and method for manufacturing gypsum board | Takumi Hatanaka, Ken Hayase | 2013-02-26 |
| 7661511 | Board building material, board building material producing method, board building material installation method | Tomoya Hasegawa, Yasuyuki Amagai, Masahiro Wada | 2010-02-16 |
| 6343283 | Data copyright management system | Makoto Saito | 2002-01-29 |
| 6081794 | Data copyright management system | Makoto Saito | 2000-06-27 |
| 5848158 | Data copyright management system | Makoto Saito | 1998-12-08 |
| 4633334 | Tracking control apparatus using digitized vertical synchronizing signal | Ken Miyazaki | 1986-12-30 |