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, Shigeyuki Dan | 1989-06-27 |
| 4837102 | Liquid developer for electrostatic photography | Shigeyuki Dan, Eiichi Kato, Kazuo Ishii, Hiroshi Ishibashi | 1989-06-06 |
| 4828952 | Electrophotographic lithographic printing plate precursor | Eiichi Kato, Kazuo Ishii, Ryosuke Itakura | 1989-05-09 |