Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5153314 | Process for producing a copper phthalocyanine compound | Kazuhiro Maruyama, Tadashi Ninomiya, Motokazu Suyama | 1992-10-06 |
| 4906747 | Process for producing a metal phthalocyanine and/or its derivative | Kazuhiro Maruyama, Tadashi Ninomiya, Motokazu Suyama | 1990-03-06 |
| 4330470 | Process for producing highly chlorinated copper phthalocyanine | Sakae Kuramoto | 1982-05-18 |
| 4218376 | Process for producing highly chlorinated copper phthalocyanine | Ryo Matsuura, Yukio Nomiyama, Yoichi Kumada, Hideo Sawada | 1980-08-19 |