Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5153314 | Process for producing a copper phthalocyanine compound | Tomio Segawa, Kazuhiro Maruyama, Tadashi Ninomiya | 1992-10-06 |
| 4906747 | Process for producing a metal phthalocyanine and/or its derivative | Tomio Segawa, Kazuhiro Maruyama, Tadashi Ninomiya | 1990-03-06 |