Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851322 | Optical recording medium | Yoshio Inagaki, Takanori Hioki, Keiichi Adachi, Yoshiaki Suzuki | 1989-07-25 |
| 4840862 | Photoconductive composition having an azaazulenium salt | Takanori Hioki, Yoshio Inagaki, Seiji Horie | 1989-06-20 |
| 4814245 | Electrophotographic photoreceptor containing a phthalocyanine pigment and a bishydrazone compound | Seiji Horie, Hideo Sato | 1989-03-21 |