Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6128463 | Image forming device | Yoshiya Matsumoto, Shigeo Nonoyama, Tetsuya Takei, Nobuo Kuwabara, Hiroshi Kera +2 more | 2000-10-03 |
| 5852757 | Electrophotographic image forming apparatus having a device for recovering residual toner | Toshio Tooda, Yoshio Yamaguchi, Nobuo Kuwabara, Mituru Sato, Haruyasu Watanabe +5 more | 1998-12-22 |
| 5848343 | Electrophotographic image-forming apparatus with uniform toner usage control | Takefumi Takahashi, Shizuo Takano, Yoshio Yamaguchi, Hiroshi Kera, Yoshiya Ishiyama +2 more | 1998-12-08 |
| 5845184 | Developing unit having improved toner density control | Yoshio Yamaguchi, Shigenobu Utaka, Toshio Tooda, Haruyasu Watanabe, Sachio Sasaki +4 more | 1998-12-01 |
| 5778285 | Image forming apparatus for collecting residual toner from a drum using an AC voltage | Sachio Sasaki, Mitsuhito Furukawa, Shigenobu Utaka, Yoshio Yamaguchi, Mitsuru Sato +3 more | 1998-07-07 |
| 5678143 | Image forming apparatus for collecting residual toner from a drum using an AC voltage | Sachio Sasaki, Mitsuhito Furukawa, Shigenobu Utaka, Yoshio Yamaguchi, Mitsuru Sato +3 more | 1997-10-14 |
| 5587774 | Cleanerless electrographic imaging device | Sachio Sasaki, Mitsuhito Furukawa, Tsuneo Watanuki, Norio Sawatari, Mikio Amaya +1 more | 1996-12-24 |
| 5572298 | Image forming apparatus having a developing apparatus which includes a partition member for partitioning a developing room and a toner hopper | Sachio Sasaki, Mitsuru Sato, Shigenobu Utaka, Takefumi Takahashi, Masahiro Wanou +1 more | 1996-11-05 |
| 5495325 | Image forming method and image forming apparatus | — | 1996-02-27 |
| 5467176 | Image forming method and apparatus with magnetic brush | Tsuneo Watanuki, Yasushige Nakamura, Satoshi Takezawa, Norio Sawatari, Sachio Sasaki +5 more | 1995-11-14 |
| 5448341 | Image forming apparatus | Sachio Sasaki, Mitsuru Sato, Shigenobu Utaka, Takefumi Takahashi, Masahiro Wanou +1 more | 1995-09-05 |
| 5424489 | Magnetic brush developing apparatus | Kunihiko Sato, Sachio Sasaki, Shin Araki, Hideaki Iwasaki | 1995-06-13 |
| 5396026 | Magnetic brush developing apparatus | Kunihiko Sato, Sachio Sasaki, Shin Araki, Hideaki Iwasaki, Kenji Fuke +2 more | 1995-03-07 |