Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844349 | Process for producing toner for developing electrostatic images and apparatus therefor | Masayoshi Kato | 1989-07-04 |
| 4816366 | Process for producing toner through suspension polymerization | Yoshihiko Hyosu, Takeshi Ikeda, Hiromi Mori, Hiroaki Kawakami, Kuniko Kobayashi | 1989-03-28 |
| 4802977 | Process for size separating toner particles | Masayoshi Kato | 1989-02-07 |