Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857433 | Electrophotographic toner for high speed electrophotography | Masaaki Shin, Hiroshi Taniwaki | 1989-08-15 |
| 4833057 | Toner composition for the electrophotography | Akira Misawa, Hisatomo Sato, Keiichi Ishikawa, Masaaki Shin, Kazuo Hisamatsu +2 more | 1989-05-23 |