Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7981204 | Porphyrazine coloring matter and ink composition containing the same | Takashi Yoneda | 2011-07-19 |
| 7901498 | Trisazo compound, ink composition, printing method and colored product | Koji Hirota, Takahiko Matsui, Takashi Yoshimoto | 2011-03-08 |