Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7981204 | Porphyrazine coloring matter and ink composition containing the same | Shinsuke Shimizu | 2011-07-19 |
| 7901497 | Water-soluble naphthalocyanine coloring matter and water-based ink containing the same | Takaaki Kurata, Takafumi Fujii, Tadayuki Kiyoyanagi, Koji Hirota | 2011-03-08 |