Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7366454 | Long magnet, production method thereof, magnet roller and image forming device | Makoto Nakamura, Sumio Kamoi, Tsuyoshi Imamura, Kyohta Koetsuka, Noriyuki Kamiya | 2008-04-29 |
| 7352983 | Development magnet roller, development device, process cartridge and image forming apparatus | Noriyuki Kamiya, Takahiro Yasunaga, Tsuyoshi Imamura, Sumio Kamoi, Kyohta Koetsuka | 2008-04-01 |
| 7203450 | Developing roller, developing apparatus, process cartridge, and image formation apparatus | Sumio Kamoi, Kyohta Koetsuka, Noriyuki Kamiya, Tsuyoshi Imamura | 2007-04-10 |
| 7189338 | Image forming apparatus and developing device therefor | Sumio Kamoi, Tsuyoshi Imamura, Noriyuki Kamiya, Kyohta Koetsuka, Masayuki Takeshita | 2007-03-13 |
| 7127199 | Developing device and process cartridge with predetermined magnetic force for an image forming apparatus | Tsuyoshi Imamura, Sumio Kamio, Kyohta Koetsuka, Noriyuki Kamiya | 2006-10-24 |
| 7027761 | Developing device and an image forming apparatus including the same | Kyohta Koetsuka, Tsuyoshi Imamura, Sumio Kamoi, Noriyuki Kamiya, Kenji Narita +1 more | 2006-04-11 |
| 6697593 | Developing device using a developing roller and image forming apparatus including the same | Tsuyoshi Imamura, Sumio Kamoi, Kyota Koetsuka, Noriyuki Kamiya, Toshihiro Atsumi | 2004-02-24 |