Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7255733 | Process for the production of β type copper phthalocyanine pigment and a use thereof | Osamu Shiromaru, Yusaku Ide, Takuya Kotani | 2007-08-14 |
| 6860934 | Process for the production of β type copper phthalocyanine pigment | Osamu Shiromaru, Yuusaku Ide, Takuya Kotani | 2005-03-01 |
| 6692559 | Pigment yellow 74 and printing ink composition | Takayoshi Ishigami, Yoshinori Kawashima, Osamu Shiromaru | 2004-02-17 |