Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10935900 | Toner for developing electrostatic charge image, electrostatic charge image developer, and toner cartridge | Daisuke Ishizuka, Narumasa SATO, Yuka Kawamoto, Erina SAITO, Norimasa Ozora +1 more | 2021-03-02 |
| 10578989 | Electrostatic charge image developer, developer cartridge, and process cartridge | Kotaro YOSHIHARA, Daisuke Ishizuka, Narumasa SATO, Yuka Kawamoto, Erina SAITO +1 more | 2020-03-03 |
| 10520841 | Electrostatic image developing toner, electrostatic latent image developer, and toner cartridge | Narumasa SATO, Erina SAITO, Yuka Kawamoto, Kotaro YOSHIHARA, Daisuke Ishizuka | 2019-12-31 |
| 10466605 | Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge | Narumasa SATO, Kotaro YOSHIHARA, Daisuke Ishizuka, Takahisa TATEKAWA, Erina SAITO | 2019-11-05 |
| 10191399 | Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge | Kotaro YOSHIHARA, Erina SAITO, Narumasa SATO | 2019-01-29 |
| 9726997 | Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, and image forming apparatus | Asafumi FUJITA, Narumasa SATO, Eisuke Iwazaki, Tomoaki Tanaka, Kotaro YOSHIHARA | 2017-08-08 |
| 9612542 | Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge | Yuki TAKAMIYA, Yuka Kawamoto, Daisuke Ishizuka | 2017-04-04 |
| 9575428 | Electrostatic-image developing toner, electrostatic image developer, and toner cartridge | Narumasa SATO, Kotaro YOSHIHARA, Daisuke Ishizuka, Asafumi FUJITA, Erina SAITO +1 more | 2017-02-21 |
| 9529292 | Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge | Tomoaki Tanaka, Kotaro YOSHIHARA, Eisuke Iwazaki, Narumasa SATO, Asafumi FUJITA | 2016-12-27 |
| 9482972 | Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge | Daisuke Ishizuka, Yuki TAKAMIYA, Yuka Kawamoto | 2016-11-01 |
| 9477166 | Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge | Eisuke Iwazaki, Asafumi FUJITA, Tomoaki Tanaka, Narumasa SATO, Kotaro YOSHIHARA | 2016-10-25 |
| 9470994 | Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge | Kotaro YOSHIHARA, Tomoaki Tanaka, Eisuke Iwazaki, Asafumi FUJITA, Narumasa SATO +1 more | 2016-10-18 |
| 9304419 | Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, and process cartridge | Narumasa SATO, Kotaro YOSHIHARA, Eisuke Iwazaki, Tomoaki Tanaka, Asafumi FUJITA | 2016-04-05 |
| 9304423 | Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, and process cartridge | Eisuke Iwazaki, Narumasa SATO, Asafumi FUJITA, Kotaro YOSHIHARA, Tomoaki Tanaka | 2016-04-05 |
| 9244372 | Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge | Yuki TAKAMIYA, Eisuke Iwazaki, Shuji Sato | 2016-01-26 |
| 9081317 | Positively chargeable toner, electrostatic charge image developer, toner cartridge, image forming method, and image forming apparatus | Atsushi Sugawara, Masanobu Ninomiya, Akira Matsumoto, Yusuke Ikeda, Satoshi KAMIWAKI +1 more | 2015-07-14 |
| 9012114 | Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge | Tsuyoshi Murakami, Yukiaki NAKAMURA, Satoshi KAMIWAKI | 2015-04-21 |
| 8722296 | Toner for electrostatic image development, method of producing the same, electrostatic image developer, toner cartridge, process cartridge, and image forming apparatus | Shinya Nakashima, Takeshi Iwanaga, Takafumi Koide, Susumu Yoshino | 2014-05-13 |
| 8298737 | White toner for electrostatic charge image development, electrostatic charge image developer, toner cartridge, process cartridge, and image forming apparatus | Yasuo Kadokura, Yukiaki NAKAMURA, Atsushi Sugawara, Yusuke Ikeda | 2012-10-30 |
| 8293440 | White toner for electrostatic image development, electrostatic image developing agent, toner cartridge, process cartridge and image forming apparatus | Yukiaki NAKAMURA, Yasuo Kadokura, Atsushi Sugawara, Yusuke Ikeda | 2012-10-23 |
| 8216757 | Toner for electrostatic charge image development and manufacturing method thereof, and electrostatic charge image developer, toner cartridge, process cartridge and image forming apparatus | Shinya Nakashima, Takeshi Iwanaga, Takafumi Koide, Susumu Yoshino | 2012-07-10 |
| 8142971 | Electrostatic charge developer, electrostatic charge image developer cartridge, process cartridge, and image forming apparatus | Yasuhiro Arima, Fusako Kiyono, Susumu Yoshino | 2012-03-27 |
| 7955774 | Electrostatic developing toner, method of producing the same, electrostatic developer and image forming method | Hideo Maehata, Susumu Yoshino, Satoshi Yoshida | 2011-06-07 |
| 7867681 | Electrostatic image developing toner, electrostatic image developer, toner cartridge, process cartridge, and image forming apparatus | Satoshi Yoshida, Shinpei Takagi, Yusuke Ikeda, Katsumi Daimon | 2011-01-11 |
| 7759040 | Image forming method | Yuusaku Shibuya, Masanobu Ninomiya, Toshiyuki Yano | 2010-07-20 |