Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6903876 | Display | Toru Okada, Masanao Fujii, Seiichi Shimoura, Shingo Yamaguchi | 2005-06-07 |
| 5852757 | Electrophotographic image forming apparatus having a device for recovering residual toner | Toshio Tooda, Yoshio Yamaguchi, Nobuo Kuwabara, Mituru Sato, Akira Nagahara +5 more | 1998-12-22 |
| 5845184 | Developing unit having improved toner density control | Akira Nagahara, Yoshio Yamaguchi, Shigenobu Utaka, Toshio Tooda, Sachio Sasaki +4 more | 1998-12-01 |
| 5778285 | Image forming apparatus for collecting residual toner from a drum using an AC voltage | Akira Nagahara, Sachio Sasaki, Mitsuhito Furukawa, Shigenobu Utaka, Yoshio Yamaguchi +3 more | 1998-07-07 |
| 5678143 | Image forming apparatus for collecting residual toner from a drum using an AC voltage | Akira Nagahara, Sachio Sasaki, Mitsuhito Furukawa, Shigenobu Utaka, Yoshio Yamaguchi +3 more | 1997-10-14 |