Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6361159 | Printing device having pressure fluctuation accommodating structure | — | 2002-03-26 |
| 6264316 | Print head device, ink jet printer, and ink cartridge | — | 2001-07-24 |
| 6250745 | Ink cartridge for printers | Shunji Umemura | 2001-06-26 |
| 6244698 | Printhead unit and ink cartridge | Kunihiko Matsuhashi, Shunji Umemura | 2001-06-12 |