Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7780259 | Ink cartridge, detection device for cartridge identification and ink level detection, and image formation apparatus comprising thereof | Masatoshi Yamada, Yukichi Sawaki, Koji Akagi | 2010-08-24 |
| 7641301 | Image recording appartus and image recording method | Yoshinari Morimoto | 2010-01-05 |
| 7523932 | Apparatus and method for conveying sheet member | Hiroshi Morisaki, Jun Morikawa, Jun Okajima | 2009-04-28 |
| 7487048 | Conveying apparatus, notification method and computer-readable medium for indicating a level of maintenance required | Hiroshi Morisaki, Tetsuro Matsuno | 2009-02-03 |
| 7360858 | Ink cartridge, detection device for cartridge identification and ink level detection, and image formation apparatus comprising thereof | Masatoshi Yamada, Yukichi Sawaki, Koji Akagi | 2008-04-22 |
| 6916076 | Image forming device capable of detecting existence of ink and ink cartridge with high accuracy | Masatoshi Yoshiyama, Atsushi Murakami, Tetsuya Ouchi | 2005-07-12 |
| 6619776 | Image forming device capable of detecting existence of ink and ink cartridge with high accuracy | Masatoshi Yoshiyama, Atsushi Murakami, Tetsuya Ouchi | 2003-09-16 |
| 5257388 | Device for detecting whether an attached external memory stores valid data, if not, whether the external memory is capable of storing data | — | 1993-10-26 |