Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880716 | Electrophotographic lithographic printing plate precursor having resin outer layer | Kazuo Ishii | 1989-11-14 |
| 4871638 | Electrophotographic photosensitive material with binder combination | Kazuo Ishii, Ryosuke Itakura | 1989-10-03 |
| 4857431 | Photoconductive composition | Kazuo Ishii | 1989-08-15 |
| 4842975 | Method of making liquid developer for electrostatic photography | Kazuo Ishii, Hiroshi Ishibashi, Shigeyuki Dan, Hidefumi Sera | 1989-06-27 |
| 4840865 | Liquid developer for electrostatic photography | Shigeyuki Dan, Hiroshi Ishibashi, Kazuo Ishii, Hidefuji Sera | 1989-06-20 |
| 4837102 | Liquid developer for electrostatic photography | Shigeyuki Dan, Kazuo Ishii, Hiroshi Ishibashi, Hidefumi Sera | 1989-06-06 |
| 4828952 | Electrophotographic lithographic printing plate precursor | Kazuo Ishii, Ryosuke Itakura, Hidefumi Sera | 1989-05-09 |