Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5304445 | Phthalocyanine composition, process for preparing the same and electrophotographic photoreceptor using the same | Mikio Itagaki, Shigeru Hayashida, Megumi Matsui, Hiroko Ishikawa, Yoshii Morishita | 1994-04-19 |
| 5284943 | Tatraazaporphin, process for producing the same, as well as optical recording media using the same and production processes thereof | Seiji Tai, Nobuyuki Hayashi, Koichi Kamijima, Mitsuo Katayose, Hideo Hagiwara | 1994-02-08 |