Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7858676 | Pigment dispersion and ink composition for ink jet printing | Naoki Okamoto, Izumi Yasuda | 2010-12-28 |
| 7008994 | Aqueous pigment dispersion, process for producing the same, and water-based ink comprising the same | — | 2006-03-07 |
| 6806300 | Water-based ink composition for ink-jet printing, ink-jet printing method using the same and printed matter | Naoki Okamoto, Kazuaki Watanabe | 2004-10-19 |
| 6274646 | Ink composition capable of realizing print with improved fixation | Kazuaki Watanabe, Kiyohiko Takemoto, Shuichi Yamaguchi, Naoki Tanaka, Naoki Okamoto +1 more | 2001-08-14 |
| 6083315 | Agglomerated pigment, process for producing the same, aqueous pigment dispersion, and water-based ink composition | Hiroto Nakamura, Hidehiko Komatsu, Michinari Tsukahara, Hideo Yamazaki, Naoki Okamoto +1 more | 2000-07-04 |