Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873589 | Data recorder and method | Yoshizumi Inazawa, Masaki Yamada, Shinya Ozaki | 1989-10-10 |
| 4842975 | Method of making liquid developer for electrostatic photography | Eiichi Kato, Kazuo Ishii, Shigeyuki Dan, Hidefumi Sera | 1989-06-27 |
| 4840865 | Liquid developer for electrostatic photography | Eiichi Kato, Shigeyuki Dan, Kazuo Ishii, Hidefuji Sera | 1989-06-20 |
| 4837102 | Liquid developer for electrostatic photography | Shigeyuki Dan, Eiichi Kato, Kazuo Ishii, Hidefumi Sera | 1989-06-06 |