Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6513893 | Head drive unit and driving method | Naomi SHIRAI, Hirokazu Ikeda, Toshihiro Asoh, Masaharu Oyama, Takanobu Kajikawa +2 more | 2003-02-04 |
| 6188493 | Electronic blackboard device | Kazuhiro Eguchi, Takeshi Nakayama | 2001-02-13 |