Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882249 | Tetrakisazo photoconductive composition and electrophotographic photoreceptor using the same | Katsugi Kitatani | 1989-11-21 |
| 4871637 | Electroconductive composition and electrophotographic photoreceptor using the same comprising bisazo compounds | Katsugi Kitatani | 1989-10-03 |