Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845007 | Process for producing toner through suspension polymerization | Yoshihiko Hyosu, Eiichi Imai | 1989-07-04 |
| 4816366 | Process for producing toner through suspension polymerization | Yoshihiko Hyosu, Takeshi Ikeda, Hitoshi Kanda, Hiroaki Kawakami, Kuniko Kobayashi | 1989-03-28 |
| 4804610 | Process for producing toner by suspension polymerization method | Satoshi Matsunaga, Kuniko Kobayashi, Yoshihiko Hyosu, Eiichi Imai | 1989-02-14 |