Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5692232 | Electrophotographic apparatus that prevents toner from attaching to a contact member of a transfer device | Yoshiaki Okano, Hirotaka Fukuyama, Kouichirou Satou, Tetsuya Nakamura, Satoshi Katagata +4 more | 1997-11-25 |
| 5669053 | Roller transfer device and transfer roller manufacturing method | Yoshiaki Okano | 1997-09-16 |
| 5655178 | Electrophotographic apparatus having cleaning device and developing device configured to prevent toner leakage | Masaaki Ishikawa, Michihisa Iguchi, Tetsuya Nakamura, Kouichirou Satou, Yoshiaki Okano +6 more | 1997-08-05 |
| 5600417 | Developing device for electrophotographic apparatus | Michihisa Iguchi, Seiji Arai, Yoshiaki Okano, Chinobu Sakai, Hirotaka Fukuyama +4 more | 1997-02-04 |