Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888264 | Process for preparing toner or capsule toner for use in electrophotography | Toru Matsumoto, Toshiyuki Koshio, Yasuhide Goseki, Hisayuki Ushiyama, Masuo Yamazaki +3 more | 1989-12-19 |
| 4857432 | Toner for developing electrostatic charge image | Hirohide Tanikawa, Keita Nozawa | 1989-08-15 |
| 4797344 | Encapsulated toner having shell with first vinyl polymer with Mn of 2000-225000 and second vinyl polymer with Mn of 1000-15000 | Ichiro Ohsaki, Hisayuki Ushiyama, Masashi Kiuchi, Masuo Yamazaki, Yasuhide Goseki +1 more | 1989-01-10 |