Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842975 | Method of making liquid developer for electrostatic photography | Eiichi Kato, Kazuo Ishii, Hiroshi Ishibashi, Hidefumi Sera | 1989-06-27 |
| 4840865 | Liquid developer for electrostatic photography | Eiichi Kato, Hiroshi Ishibashi, Kazuo Ishii, Hidefuji Sera | 1989-06-20 |
| 4837102 | Liquid developer for electrostatic photography | Eiichi Kato, Kazuo Ishii, Hiroshi Ishibashi, Hidefumi Sera | 1989-06-06 |