Issued Patents All Time
Showing 1–25 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7855042 | Developer and image forming method | Takakuni Kobori, Masami Fujimoto, Katsuhisa Yamazaki, Syuhei Moribe, Daisuke Yoshiba | 2010-12-21 |
| 7070898 | Toner | Tatsuya Nakamura, Akira Hashimoto, Keiji Komoto | 2006-07-04 |
| 7024138 | Image forming apparatus, and replenishing developer kit | Naotaka Ikeda, Kazumi Yoshizaki, Hironori Minagawa | 2006-04-04 |
| 7016630 | Image forming apparatus | Kazumi Yoshizaki, Masashige Tamura, Naotaka Ikeda | 2006-03-21 |
| 6936394 | Replenishing developer and developing method | Yushi Mikuriya, Kazumi Yoshizaki, Naotaka Ikeda | 2005-08-30 |
| 6855469 | Full-color image-forming method, and two-component developer kit for forming full-color images | Naotaka Ikeda, Yushi Mikuriya, Shinya Yachi, Kazumi Yoshizaki, Katsuyuki Nonaka | 2005-02-15 |
| 6641967 | Carrier for electrophotography, two component type developer, and image forming method | Tsuyoshi Takiguchi, Tetsuya Ida | 2003-11-04 |
| 6548218 | Magnetic particles for charging means, and electrophotographic apparatus, process cartridge and image forming method including same | Tsutomu Kukimoto, Shuichi Aita, Tsuyoshi Takiguchi | 2003-04-15 |
| 6465144 | Magnetic toner, process for production thereof, and image forming method, apparatus and process cartridge using the toner | Akira Hashimoto, Tsutomu Kukimoto, Tatsuya Nakamura, Tsuyoshi Takiguchi, Tatsuhiko Chiba +2 more | 2002-10-15 |
| 6372400 | Carrier for use in electrophotography, two-component type developer and image forming method | Kazumi Yoshizaki, Makoto Kanbayashi, Yushi Mikuriya | 2002-04-16 |
| 6316157 | Toner and image forming method | Junko Yoshikawa, Masaaki Taya, Yushi Mikuriya, Kazumi Yoshizaki, Yasushi Katsuta +1 more | 2001-11-13 |
| 6316156 | Carrier for electrophotography, two component type developer, and image forming method | Tsuyoshi Takiguchi, Tetsuya Ida | 2001-11-13 |
| 6312862 | Two-component type developer and image forming method | Ryoichi Fujita, Yushi Mikuriya, Shinya Yachi, Kazumi Yoshizaki | 2001-11-06 |
| 6285848 | Electrophotographic apparatus, image forming method, and process cartridge for developing an image with toner containing an external additive | Shuichi Aita, Toshiyuki Ugai, Ryoichi Fujita, Fumihiro Arahira, Kiyoshi Mizoe +1 more | 2001-09-04 |
| 6137977 | Image forming method and image forming apparatus using specific developer composition | Ryoichi Fujita, Masanori Shida, Kazumi Yoshizaki | 2000-10-24 |
| 6124067 | Magnetic carrier, two-component developer and image forming method | Yushi Mikuriya, Kazumi Yoshizaki | 2000-09-26 |
| 6077635 | Toner, two-component developer and image forming method | Ryoichi Fujita, Wakashi Iida, Yuji Moriki, Kazumi Yoshizaki, Michihisa Magome | 2000-06-20 |
| 6077636 | Toner, two-component developer, image forming method and apparatus unit | Yuji Moriki, Hiroaki Kawakami, Shinya Yachi, Michihisa Magome | 2000-06-20 |
| 6030737 | Non-magnetic toner for developing electrostatic image, process for producing non-magnetic toner particles, and image forming method | Toshiyuki Ugai | 2000-02-29 |
| 5994019 | Image forming method | Toshiyuki Ugai, Ryoichi Fujita, Kazumi Yoshizaki | 1999-11-30 |
| 5885742 | Carrier for electrophotography, two-component type developer, and image forming method | Toshiyuki Ugai, Ryoichi Fujita, Tsuyoshi Takiguchi | 1999-03-23 |
| 5853938 | Toner for developing electrostatic image | Akihiko Nakazawa | 1998-12-29 |
| 5851714 | Toner for developing electrostatic image and fixing method | Masaaki Taya, Ryoichi Fujita, Makoto Kanbayashi, Tsuyoshi Takiguchi, Wakashi Iida +1 more | 1998-12-22 |
| 5795693 | Carrier for electrophotography, two component-type developer and image forming method | Tsuyoshi Takiguchi, Tetsuya Ida | 1998-08-18 |
| 5774771 | Image forming method and apparatus using a particular toner | Tsutomu Kukimoto, Motoo Urawa, Toshiyuki Ugai, Keita Nozawa, Satoshi Yoshida +1 more | 1998-06-30 |