Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8213833 | Image forming apparatus, process cartridge, image forming method and developer for electrophotography | Shinichiro Yagi, Masashi Nagayama, Hltoahi Iwatsuki | 2012-07-03 |
| 8086143 | Image forming apparatus for use with carrier including a core and cover layer | Masashi Nagayama, Shinichiro Yagi, Hitoshi Iwatsuki | 2011-12-27 |
| 8026032 | Carrier, supplemental developer, developer in image developer, developer feeding apparatus, image forming apparatus and process cartridge | Hitoshi Iwatsuki, Shinichiro Yagi, Masashi Nagayama | 2011-09-27 |
| 7835677 | Developing device, image forming apparatus, and process cartridge | Koichi Sakata, Shinichiro Yagi | 2010-11-16 |
| 7713670 | Developer, and image forming method using the developer | Masami Tomita, Masahide Yamashita, Kousuke Suzuki | 2010-05-11 |
| 7592116 | Indium-containing carrier for electrophotography, developer using the same, and developer container | Kousuke Suzuki, Shinichiro Yagi, Hitoshi Iwatsuki | 2009-09-22 |
| 7527908 | Carrier, developer, developer container, image forming method and process cartridge | Hitoshi Iwatsuki, Shinichiro Yagi, Kousuke Suzuki | 2009-05-05 |
| 7384719 | Carrier, developer including the carrier, and image forming apparatus using the developer | Masahide Yamashita, Kousuke Suzuki | 2008-06-10 |
| 7344812 | Developer for developing electrostatic latent image and image forming apparatus | Kohsuke Suzuki, Satoshi Mochizuki, Masahide Yamashita, Tomomi Tamura, Takayuki Koike | 2008-03-18 |
| 7272347 | Carrier, developer including the carrier, and image forming apparatus using the developer | Masahide Yamashita, Satoshi Mochizuki, Kohsuke Suzuki | 2007-09-18 |
| 7252919 | Carrier and developer for latent electrostatic image development, container housing developer, image forming process, image forming apparatus, and process cartridge | Kousuke Suzuki, Masahide Yamashita | 2007-08-07 |
| 7232632 | Color toners and image forming method using the color toners | Shinichi Kuramoto, Hideki Sugiura | 2007-06-19 |
| 7226713 | Carrier, developer including the carrier and image forming apparatus using the developer | Masahide Yamashita, Satoshi Mochizuki, Kohsuke Suzuki | 2007-06-05 |
| 7172846 | Carrier, developer, image forming apparatus and process cartridge | Masahide Yamashita, Kohsuke Suzuki | 2007-02-06 |
| 7144669 | Carrier and developer for latent electrostatic image development, container housing developer, image forming process, image forming apparatus, and process cartridge | Kousuke Suzuki, Masahide Yamashita | 2006-12-05 |
| 6821699 | Toner, image forming method and apparatus using the toner, and container containing the toner | Hachiro Tosaka, Hitoshi Ueda, Tomiaki Ito | 2004-11-23 |
| 6780556 | EXTERNAL ADDITIVE FOR ELECTROPHOTOGRAPHIC TONER, METHOD FOR MANUFACTURING THE EXTERNAL ADDITIVE, ELECTROPHOTOGRAPHIC TONER USING THE EXTERNAL ADDITIVE, AND IMAGE FORMING APPARATUS USING THE ELECTROPHOTOGRAPHIC TONER | Hideki Sugiura | 2004-08-24 |
| 6641969 | Magnetic toner with negative polarity for developing latent electrostatic images, and image forming apparatus using the same | Osamu Uchinokura | 2003-11-04 |
| 6630276 | EXTERNAL ADDITIVE FOR ELECTROPHOTOGRAPHIC TONER, METHOD FOR MANUFACTURING THE EXTERNAL ADDITIVE, ELECTROPHOTOGRAPHIC TONER USING THE EXTERNAL ADDITIVE, AND IMAGE FORMING APPARATUS USING THE ELECTROPHOTOGRAPHIC TONER | Hideki Sugiura | 2003-10-07 |
| 6503676 | Toner, external additive therefor and image forming method using the toner | Hiroshi Yamashita, Hideki Sugiura, Hachiroh Tosaka, Osamu Uchinokura, Hitoshi Ueda +1 more | 2003-01-07 |
| 6479204 | Magnetic toner with negative polarity for developing latent electrostatic images, and image forming apparatus using the same | Osamu Uchinokura | 2002-11-12 |
| 6403275 | Electrophotographic toner, and image forming method and apparatus using the toner | Shinichi Kuramoto, Mitsuo Aoki, Hiroshi Yamashita, Fumihiro Sasaki, Masahide Yamashita +2 more | 2002-06-11 |
| 6258502 | Two-component developer, two-component developer holding container, and electrophotographic image formation apparatus equipped with the container | Yasushi Nakamura, Noboru Kuroda, Ryoichi Ito, Yasuaki Iwamoto, Kohki Katoh +2 more | 2001-07-10 |
| 6183926 | Toner and two-component developer for electrophotographic process and image formation method and image formation apparatus using the toner | Noboru Kuroda, Yasushi Nakamura, Ryoichi Ito, Yasuaki Iwamoto, Kohki Katoh +3 more | 2001-02-06 |
| 5519316 | Method and apparatus for measuring a toner concentration of a two-component developer | Tomoe Hagiwara, Mitsuo Aoki, Masanori Suzuki, Takahisa Kato | 1996-05-21 |