Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8293447 | Toner | Katsuhisa Yamazaki, Masami Fujimoto | 2012-10-23 |
| 7897316 | Toner having hybrid binder resin with polyester unit and vinyl copolymer unit | Katsuhisa Yamazaki, Masami Fujimoto, Shuichi Hiroko | 2011-03-01 |
| 7147981 | Toner | Hiroyuki Fujikawa, Masami Fujimoto, Takakuni Kobori | 2006-12-12 |
| 6929894 | Toner and fixing method | Nobuyoshi Sugahara, Junko Yoshikawa, Takayuki Itakura, Yojiro Hotta | 2005-08-16 |
| 6670087 | Toner, image-forming apparatus, process cartridge and image forming method | Hiroyuki Fujikawa, Takakuni Kobori, Masami Fujimoto | 2003-12-30 |
| 6326114 | Toner, and process for producing a toner | Takayuki Itakura, Wakashi Iida, Junko Yoshikawa, Nobuyoshi Sugahara | 2001-12-04 |
| 6316157 | Toner and image forming method | Junko Yoshikawa, Kenji Okado, Yushi Mikuriya, Kazumi Yoshizaki, Yasushi Katsuta +1 more | 2001-11-13 |
| 6187490 | Resin-coated carrier, two-component developer and image forming method | Takaaki Kohtaki, Yasuhiro Ichikawa | 2001-02-13 |
| 6022659 | Yellow toner for developing electrostatic images | Makoto Kanbayashi, Wakashi Iida, Tetsuya Ida | 2000-02-08 |
| 6013402 | Color toner and image forming method | Makoto Kanbayashi, Wakashi Iida, Tetsuya Ida | 2000-01-11 |
| 6001525 | Electrophotographic developer carrier, two-component type developer and image forming method | Tetsuya Ida, Makoto Kanbayashi | 1999-12-14 |
| 5994018 | Toner | Wakashi Iida, Makoto Kanbayashi, Tetsuya Ida, Junko Inaba | 1999-11-30 |
| 5912099 | Magenta toner, process for producing same and color image forming method using same | Makoto Kanbayashi, Ryoichi Fujita, Wakashi Iida, Tetsuya Ida | 1999-06-15 |
| 5851714 | Toner for developing electrostatic image and fixing method | Kenji Okado, Ryoichi Fujita, Makoto Kanbayashi, Tsuyoshi Takiguchi, Wakashi Iida +1 more | 1998-12-22 |
| 5747209 | Toner for developing electrostatic images containing aromatic hydroxycarboxylic acid and metal compound of the aromatic hydroxycarboxylic acid | Tsuyoshi Takiguchi, Kenji Okado, Ryoichi Fujita, Makoto Kanbayashi, Kohji Inaba +4 more | 1998-05-05 |
| 5700617 | Toner for developing electrostatic images and charge-controlling agent | Tsuyoshi Takiguchi, Kenji Okado, Ryoichi Fujita, Makoto Kanbayashi, Wakashi Iida +1 more | 1997-12-23 |
| 5665513 | Toner for developing electrostatic charged image | Tetsuya Ida, Tsuyoshi Takiguchi | 1997-09-09 |
| 5578408 | Toner for developing electrostatic image | Takaaki Kohtaki, Makoto Unno, Tadashi Doujo | 1996-11-26 |
| 5578409 | Toner for developing electrostatic image, one component-type developer and two-component type developer | Takaaki Kotaki, Makoto Unno, Yushi Mikuriya, Tadashi Dojyo | 1996-11-26 |
| 5547796 | Developer containing insulating magnetic toner flowability-improving agent and inorganic fine powder | Takaaki Kohtaki, Masami Fujimoto | 1996-08-20 |
| 5504272 | Magnetic toner having defined particle distribution | Masaki Uchiyama, Hirohide Tanikawa, Yasutaka Akashi, Makoto Unno | 1996-04-02 |
| 5500318 | Toner for developing electrostatic image and fixing method | Hirohide Tanikawa, Masaki Uchiyama, Yoshinobu Joh, Yasutaka Akashi, Makoto Unno | 1996-03-19 |
| 5483327 | Toner for developing electrostatic image, forming apparatus and process cartridge | Takaaki Kohtaki, Makoto Unno, Tadashi Doujo | 1996-01-09 |
| 5480755 | Magnetic toner, image forming method, surface-modified fine silica powder and process for its production | Masaki Uchiyama, Yoshinobu Jo, Yasutaka Akashi, Makoto Unno | 1996-01-02 |
| 5439770 | Toner for developing electrostatic image, image forming apparatus and process cartridge | Takaaki Kohtaki, Makoto Unno, Tadashi Doujo | 1995-08-08 |