Issued Patents All Time
Showing 26–50 of 64 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7442484 | Image forming method using toner | Osamu Uchinokura, Akihiro Kotsugai, Yasuo Asahina, Tomoyuki Ichikawa, Shinya Nakayama +5 more | 2008-10-28 |
| 7413838 | External additives for electrophotographic toner, electrophotographic toner, electrophotographic developer, image forming method and image forming apparatus | Hideki Sugiura, Yasuaki Iwamoto, Kazuhiko Umemura | 2008-08-19 |
| 7405000 | Resin particle and process of producing the same | Tadao Takikawa, Toshihiko Kinsho, Hidetoshi Noda, Shuhei Yahiro, Yutaka Yoshida +3 more | 2008-07-29 |
| 7374851 | Toner, and, developer, toner container, process cartridge, image forming apparatus and image forming method | Shinya Nakayama, Yasuaki Iwamoto, Yasuo Asahina, Akihiro Kotsugai, Masayuki Ishii +17 more | 2008-05-20 |
| 7368213 | Toner and fixing device and image forming device using the same | Shinya Nakayama, Fumihiro Sasaki, Akihiro Kotsugai, Yasuo Asahina, Osamu Uchinokura +5 more | 2008-05-06 |
| 7368212 | Toner for developing electrostatic image, developer, image forming apparatus, process for forming image, process cartridge and process for measuring porosity of toner | Hideki Sugiura, Yasuaki Iwamoto, Yasuo Asahina, Akihiro Kotsugai, Shinya Nakayama +4 more | 2008-05-06 |
| 7344812 | Developer for developing electrostatic latent image and image forming apparatus | Kohsuke Suzuki, Tomio Kondou, Masahide Yamashita, Tomomi Tamura, Takayuki Koike | 2008-03-18 |
| 7318989 | Toner, developer, toner container, process cartridge, image forming apparatus, and image forming method | Akihiro Kotsugai, Hisashi Nakajima, Yasuo Asahina, Osamu Uchinokura, Masayuki Ishii +8 more | 2008-01-15 |
| 7288353 | Toner, developer, image developer and image forming apparatus | Hideki Sugiura, Yasuaki Iwamoto, Yasuo Asahina, Kazuhiko Umemura, Tomoyuki Ichikawa +3 more | 2007-10-30 |
| 7272347 | Carrier, developer including the carrier, and image forming apparatus using the developer | Masahide Yamashita, Tomio Kondou, Kohsuke Suzuki | 2007-09-18 |
| 7261989 | Toner for developing electrostatic images, developer, image forming method, and image forming apparatus | Hideki Sugiura, Yasuaki Iwamoto, Yasuo Asahina, Hisashi Nakajima, Tomoyuki Ichikawa +4 more | 2007-08-28 |
| 7258959 | Toner for electrophotography and image forming apparatus | Shinya Nakayama, Yasuaki Iwamoto, Yasuo Asahina, Kazuhiko Umemura, Hideki Sugiura +7 more | 2007-08-21 |
| 7226713 | Carrier, developer including the carrier and image forming apparatus using the developer | Masahide Yamashita, Tomio Kondou, Kohsuke Suzuki | 2007-06-05 |
| 7172844 | Toner for electrophotography, and image forming process, process cartridge and image forming apparatus using the same | Kazuhiko Umemura, Yasuaki Iwamoto, Yasuo Asahina, Hideki Sugiura, Tomoyuki Ichikawa +3 more | 2007-02-06 |
| 7169525 | Toner, developer, image forming apparatus, process cartridge and image forming process | Hideki Sugiura, Yasuaki Iwamoto, Yasuo Asahina, Kazuhiko Umemura, Tomoyuki Ichikawa +3 more | 2007-01-30 |
| 7169522 | Toner for developing a latent electrostatic image, developer using the same, full-color toner kit using the same, image-forming apparatus using the same, image-forming process cartridge using the same and image-forming process using the same | Hideki Sugiura, Yasuo Asahina, Kazuhiko Umemura, Minoru Masuda, Tomomi Tamura | 2007-01-30 |
| 7166403 | Toner, developer, image developing apparatus, and image forming apparatus | Tomoyuki Ichikawa, Yasuaki Iwamoto, Hideki Sugiura, Tadao Takikawa, Toshihiko Kinsho +2 more | 2007-01-23 |
| 7163773 | Toner for developing electrostatic image, developer, process for forming image, and image forming apparatus | Hideki Sugiura, Yasuaki Iwamoto, Kazuhiko Umemura, Yasuo Asahina, Shinya Nakayama | 2007-01-16 |
| 7024140 | Toner feeder, toner, and electrophotographic image forming apparatus using the toner feeder and toner | Minoru Masuda, Hideki Sugiura, Kazuhiko Umemura, Tomomi Suzuki | 2006-04-04 |
| 6946229 | Toner for forming color image, image forming apparatus, and toner container | Masanori Suzuki, Takuya Saito, Hiroshi Yamashita, Yohichiroh Watanabe, Takeshi Takada +3 more | 2005-09-20 |
| 6902857 | Method for forming electrophotographic image and electrographic device | Shinichiro Yagi, Naohito Shimota, Tatsuya Niimi, Hiroaki Matsuda, Tomomi Tamura | 2005-06-07 |
| 6902858 | Image formation apparatus using a dry two-component developer for development | Naohito Shimota, Hiroaki Matsuda, Shinichiro Yagi, Tomomi Tamura, Tatsuya Niimi | 2005-06-07 |
| 6861191 | Dry toner for developing electrostatic images | Hideki Sugiura, Kazuhiko Umemura, Minoru Masuda, Kohsuke Suzuki, Tomomi Suzuki +1 more | 2005-03-01 |
| 6828075 | Carrier for electrophotography and developer using the same | Kousuke Suzuki, Yasuo Asahina, Kazuhiko Umemura, Hideki Sugiura, Minoru Masuda +1 more | 2004-12-07 |
| 6818369 | Toner for electrostatic image development and image forming method and apparatus using the toner | Hideki Sugiura, Yasuo Asahina, Kazuhiko Umemura, Minoru Masuda, Kohsuke Suzuki +1 more | 2004-11-16 |