Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9535350 | Method for producing ground toner | Keiichi Kikawa, Yoritaka Tsubaki, Keigo Mitamura, Yui Kawano, Shintaro Fukuoka | 2017-01-03 |
| 9274447 | Two-component color developer and image formation device using same | Yoritaka Tsubaki, Keiichi Kikawa, Keigo Mitamura, Yui Kawano, Shintaro Fukuoka | 2016-03-01 |
| 9250549 | Full-color toner set, full-color developer set, image-formation method using same, and image-formation device | Shintaro Fukuoka, Yoritaka Tsubaki, Keigo Mitamura, Yui Kawano, Keiichi Kikawa | 2016-02-02 |
| 7524600 | Electrophotographic toner | Tomoko Toizumi, Yoshiaki Akazawa, Satoshi Ogawa, Masao Suzuki, Akio Matsumoto +6 more | 2009-04-28 |
| 7407732 | Electrophotographic toner | Satoshi Ogawa, Masahiko Kubo, Kouji Kida | 2008-08-05 |
| 7206539 | Non-magnetic single component developing device | Akihiko Kawahara, Kazuya Korematu, Toru Nishikawa | 2007-04-17 |
| 7011920 | Non-magnetic mono-component toner and developing method with the same | Takafumi Nagai, Toshihisa Ishida, Kouji Kida, Kazuya Korematsu, Toru Nishikawa +1 more | 2006-03-14 |
| 6783906 | Image forming apparatus | Toshihisa Ishida, Masanori Matsumoto, Kouji Kida, Yuko Takeda | 2004-08-31 |
| 6682867 | Toner for electrophotography | Masahiko Kubo, Satoshi Ogawa, Hiroyuki Terada, Kinji Shinzo, Yoshinori Shimane | 2004-01-27 |
| 5983055 | Photosensitive element for electrophotography | Takahiro Bito, Syouichi Fujita, Kouichi Takenouchi, Teruhiko Noguchi, Yukihisa Imaue +3 more | 1999-11-09 |
| 5974280 | Image forming apparatus having a toner concentration controlling mechanism based on a clocked time period for the recovery | Yuichiro Takesue, Yoshiaki Akazawa, Tadashi Nakamura, Toshihiko Murakami, Junichi Saito | 1999-10-26 |
| 5565294 | Electrostatic charge image-developing toner with polyethylene additive | Tadashi Nakamura, Toshihiko Murakami, Yasuharu Morinishi, Katsuaki Sumida, Toshihisa Ishida | 1996-10-15 |