Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9505723 | Compound, dispersant and toner | Haruko Kubo, Junko Chizuwa, Tomoya Yamamoto, Hitoshi Itabashi, Yuhei Terui +3 more | 2016-11-29 |
| 8268908 | Pigment dispersion liquid, inkjet recording ink, inkjet recording method, ink cartridge and inkjet recording apparatus | Takayuki Ookawa, Junko Chizuwa, Tomoya Yamamoto | 2012-09-18 |
| 8043423 | Pigment dispersion liquid, ink jet recording ink, ink jet recording method, ink cartridge and ink jet recording apparatus | Junko Chizuwa, Tomoya Yamamoto, Takayuki Ookawa | 2011-10-25 |
| 7771526 | Ink jet aqueous ink, ink jet recording method, ink cartridge and ink jet recording apparatus | Tomoya Yamamoto, Yukiko Tachibana | 2010-08-10 |
| 7481525 | Ink-jet water-based ink, ink-jet recording method, ink cartridge and ink-jet recording apparatus | Tomoya Yamamoto, Yukiko Tachibana | 2009-01-27 |