Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7664441 | Developer holding member, development device, process cartridge, image forming apparatus and method of manufacturing hollow body | Tsuyoshi Imamura, Kyohta Koetsuka, Yoshiyuki Takano, Masayuki Ohsawa, Hiroya Abe +3 more | 2010-02-16 |
| 7572388 | Magnet compound material to be compression molded, a molded elongate magnetic, a magnet roller, a developing agent-carrying body, a developing apparatus and an image-forming apparatus | Satoshi Terashima, Sumio Kamoi, Yoshiyuki Takano, Tsuyoshi Imamura, Kyohta Koetsuka +1 more | 2009-08-11 |
| 7366454 | Long magnet, production method thereof, magnet roller and image forming device | Makoto Nakamura, Mieko Kakegawa, Sumio Kamoi, Tsuyoshi Imamura, Kyohta Koetsuka | 2008-04-29 |
| 7352983 | Development magnet roller, development device, process cartridge and image forming apparatus | Takahiro Yasunaga, Tsuyoshi Imamura, Sumio Kamoi, Kyohta Koetsuka, Mieko Kakegawa | 2008-04-01 |
| 7203450 | Developing roller, developing apparatus, process cartridge, and image formation apparatus | Mieko Kakegawa, Sumio Kamoi, Kyohta Koetsuka, Tsuyoshi Imamura | 2007-04-10 |
| 7189338 | Image forming apparatus and developing device therefor | Sumio Kamoi, Tsuyoshi Imamura, Mieko Kakegawa, 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, Mieko Kakegawa | 2006-10-24 |
| 7027761 | Developing device and an image forming apparatus including the same | Kyohta Koetsuka, Tsuyoshi Imamura, Sumio Kamoi, Kenji Narita, Kenzo Tatsumi +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, Mieko Kakegawa, Toshihiro Atsumi | 2004-02-24 |
| 6287246 | Development roller | Takayuki Yoshii, Kyoichi Ashikawa, Taisuke Tokuwaki, Makoto Nakamura, Yoshiyuki Takano +1 more | 2001-09-11 |