Issued Patents All Time
Showing 1–25 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6635398 | Dry toner, dry toner production process, and image forming method | Keiji Komoto, Tatsuhiko Chiba, Akira Hashimoto | 2003-10-21 |
| 6610454 | Toner and image forming method | Akira Hashimoto, Manabu Ohno, Tsuyoshi Takiguchi, Yasukazu Ayaki, Satoshi Handa +2 more | 2003-08-26 |
| 6596452 | Magnetic toner and image-forming method making use of the same | Michihisa Magome, Tsuyoshi Takiguchi, Tatsuhiko Chiba, Akira Hashimoto, Keiji Komoto | 2003-07-22 |
| 6548218 | Magnetic particles for charging means, and electrophotographic apparatus, process cartridge and image forming method including same | Kenji Okado, 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, Kenji Okado, Tatsuya Nakamura, Tsuyoshi Takiguchi, Tatsuhiko Chiba +2 more | 2002-10-15 |
| 6447969 | Toner and image forming method | Masanori Ito, Tsuyoshi Takiguchi, Tatsuhiko Chiba, Michihisa Magome, Akira Hashimoto +1 more | 2002-09-10 |
| 6214509 | Toner and image forming method | Takashige Kasuya, Satoshi Yoshida, Hiroshi Yusa, Manabu Ohno, Tsuyoshi Takiguchi +3 more | 2001-04-10 |
| 5998080 | Electrostatic image-developing toner and image-forming method | Manabu Ohno, Satoshi Yoshida, Yasukazu Ayaki, Satoshi Handa, Akira Hashimoto +2 more | 1999-12-07 |
| 5976755 | Image forming method featuring a residual charge control property resulting from a selected toner formulation | Satoshi Yoshida, Manabu Ohno, Yasukazu Ayaki, Satoshi Handa, Akira Hashimoto | 1999-11-02 |
| 5948584 | Toner for developing electrostatic images and image forming method | Akira Hashimoto, Satoshi Yoshida, Manabu Ohno, Yasukazu Ayaki, Satoshi Handa | 1999-09-07 |
| 5940662 | Charging apparatus and electrophotographic apparatus | Yoshifumi Hano, Shuichi Aita, Tsuyoshi Takiguchi, Fumihiro Arahira, Yuji Ishihara +1 more | 1999-08-17 |
| 5915150 | Image forming method utilizing toner having inorganic particles and particles of a specific sphericity | Motoo Urawa, Shuichi Aita, Satoshi Yoshida | 1999-06-22 |
| 5890037 | Electrophotographic apparatus using photoconductive member chargeable with magnetic brush | Akio Maruyama, Shuichi Aita, Yoshifumi Hano | 1999-03-30 |
| 5802428 | Images forming apparatus and developer for developing electrostatic images | Manabu Ohno, Hisayuki Ochi, Tetsuhito Kuwashima, Hiroyuki Suematsu, Eiichi Imai +3 more | 1998-09-01 |
| 5774771 | Image forming method and apparatus using a particular toner | Motoo Urawa, Kenji Okado, Toshiyuki Ugai, Keita Nozawa, Satoshi Yoshida +1 more | 1998-06-30 |
| 5751405 | Image forming apparatus | Shuichi Aita, Satoshi Yoshida, Yoshifumi Hano | 1998-05-12 |
| 5731122 | Image forming method and image forming apparatus | Satoshi Yoshida, Motoo Urawa, Shuichi Aita, Yoshifumi Hano, Yuki Nishio | 1998-03-24 |
| 5724632 | Charging apparatus and electrophotographic apparatus | Fumihiro Arahira, Shuichi Aita, Kiyoshi Mizoe, Yoshifumi Hano | 1998-03-03 |
| 5715501 | Image forming method using a surface with a specified water contact angle and process cartridge using such a method | Shuichi Aita, Toshiyuki Yoshihara, Motoo Urawa, Yoshifumi Hano | 1998-02-03 |
| 5712070 | Toner for developing electrostatic image, image forming method, developing device and process cartridge | Keita Nozawa, Motoo Urawa, Osamu Tamura | 1998-01-27 |
| 5710965 | Developer for developing electrostatic images and image forming method | Keita Nozawa, Satoshi Matsunaga, Kazuyoshi Hagiwara | 1998-01-20 |
| 5618647 | Magnetic toner and image forming method | Yasuhide Goseki, Motoo Urawa, Masayoshi Shimamura, Keiji Okano, Keita Nozawa +2 more | 1997-04-08 |
| 5576810 | Image forming method | Shuichi Aita, Toshiyuki Yoshihara, Satoshi Yoshida, Yoshifumi Hano, Yuki Nishio | 1996-11-19 |
| 5534981 | Image forming apparatus and developer for developing electrostatic images | Manabu Ohno, Hisayuki Ochi, Tetsuhito Kuwashima, Hiroyuki Suematsu, Eiichi Imai +3 more | 1996-07-09 |
| 5534982 | Developing apparatus | Katsuhiro Sakaizawa, Motoo Urawa, Satoshi Yoshida | 1996-07-09 |