Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6205300 | Image forming apparatus for forming a more uniform image | — | 2001-03-20 |
| 5692232 | Electrophotographic apparatus that prevents toner from attaching to a contact member of a transfer device | Yoshiaki Okano, Hiroshi Hashizume, Hirotaka Fukuyama, Kouichirou Satou, Tetsuya Nakamura +4 more | 1997-11-25 |
| 5655178 | Electrophotographic apparatus having cleaning device and developing device configured to prevent toner leakage | Masaaki Ishikawa, Michihisa Iguchi, Hiroshi Hashizume, Tetsuya Nakamura, Kouichirou Satou +6 more | 1997-08-05 |
| 5600417 | Developing device for electrophotographic apparatus | Michihisa Iguchi, Hiroshi Hashizume, Seiji Arai, Yoshiaki Okano, Hirotaka Fukuyama +4 more | 1997-02-04 |
| 5537192 | Transfer roller and toner for electrophotographic apparatus | Michihisa Iguchi, Hiroshi Hashizume, Seiji Arai, Yoshiaki Okano, Hirotaka Fukuyama +4 more | 1996-07-16 |
| 5488462 | Electrophotographic apparatus having developing device with seals for preventing toner leakage | Masaaki Ishikawa, Michihisa Iguchi, Hiroshi Hashizume, Tetsuya Nakamura, Kouichirou Satou +6 more | 1996-01-30 |
| 5477306 | Detachable process unit for an electrophotographic device | Michihisa Iguchi, Seiji Arai, Takahito Kabai, Satoshi Katagata | 1995-12-19 |
| 5465140 | Developing device and image forming apparatus including an agitator having two springs wound in different directions around a rod | Tetsuya Nakamura, Takahito Kabai, Michihisa Iguchi, Seiji Arai, Satoshi Katagata | 1995-11-07 |
| 5412364 | Toner pack and development device for use in electrophotographic apparatus | Michihisa Iguchi, Hiroshi Hashizume, Seiji Arai, Yoshiaki Okano, Hirotaka Fukuyama +4 more | 1995-05-02 |