Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7297202 | Dispersible colorant, method of producing same, aqueous ink using same, ink tank, ink jet recording apparatus, ink jet recording method, and ink jet recorded image | Hirofumi Ichinose, Masashi Miyagawa, Junichi Sakai, Yoshio Nakajima | 2007-11-20 |
| 7291211 | Aqueous ink, ink tank, ink jet recording apparatus, ink jet recording method, and ink jet recorded image | Toshiaki Kaneko, Sadayuki Sugama, Masashi Miyagawa, Junichi Sakai, Yoshio Nakajima | 2007-11-06 |