Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6312862 | Two-component type developer and image forming method | Kenji Okado, Ryoichi Fujita, Shinya Yachi, Kazumi Yoshizaki | 2001-11-06 |
| 6124067 | Magnetic carrier, two-component developer and image forming method | Kenji Okado, Kazumi Yoshizaki | 2000-09-26 |
| 6115574 | Image-forming method | — | 2000-09-05 |
| 6090515 | Toner for developing electrostatic image, image forming method and process cartridge | Koichi Tomiyama, Takaaki Kohtaki, Manabu Ohno, Makoto Unno, Nobuyuki Okubo +2 more | 2000-07-18 |
| 6017669 | Toner for developing an electrostatic image | Makoto Unno, Takaaki Kotaki, Tadashi Doujo | 2000-01-25 |
| 5858597 | Toner for developing electrostatic image containing specified double oxide particles | Yuichi Mizoh, Takaaki Kohtaki, Tadashi Doujo | 1999-01-12 |
| 5849453 | Image forming method including recycling of untransferred toner collected from image bearing member to developing means | Masaki Uchiyama, Yasutaka Akashi | 1998-12-15 |
| 5773183 | Toner for developing electrostatic images | Tadashi Doujo, Yuichi Mizoo, Takaaki Kotaki | 1998-06-30 |
| 5716746 | Magnetic toner and process for producing magnetic toner | Toshiaki Nakahara, Masayoshi Shimamura, Kuniko Kobayashi, Kazuyoshi Hagiwara, Masami Fujimoto | 1998-02-10 |
| 5695902 | Toner for developing electrostatic image, image forming method and process-cartridge | Yuichi Mizoh, Tadashi Doujo | 1997-12-09 |
| 5660963 | Toner for developing electrostatic image | Tadashi Doujo, Takaaki Kohtaki, Makoto Unno | 1997-08-26 |
| 5641600 | Magnetic toner and image forming method | Takaaki Kotaki, Masaki Uchiyama, Yasutaka Akashi, Makoto Unno, Tadashi Dojyo | 1997-06-24 |
| 5604072 | Toner for developing electrostatic images, image forming method and process cartridge | Makoto Unno, Takaaki Kotaki, Tadashi Dojyo | 1997-02-18 |
| 5578409 | Toner for developing electrostatic image, one component-type developer and two-component type developer | Takaaki Kotaki, Masaaki Taya, Makoto Unno, Tadashi Dojyo | 1996-11-26 |
| 5354637 | Magnetic toner | Masayoshi Shimamura, Toshiaki Nakahara, Kuniko Kobayashi, Kazuyoshi Hagiwara, Masami Fujimoto | 1994-10-11 |