Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4912002 | Electrophotosensitive layered article provided styryl compounds and bisazo pigment | Setsuo Ishibashi, Yorihiko Sasaki | 1990-03-27 |
| 4851315 | Bisazo photoconductive film and electrophotographic light-sensitive element using same | Setsuo Ishibashi | 1989-07-25 |