Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11106150 | Carrier, developer, method, and apparatus for forming electrophotographic image, and process cartridge | Masashi Nagayama, Hiroyuki Kishida, Masahiro Seki, Yoshimichi Ishikawa | 2021-08-31 |
| 10578988 | Toner, image forming apparatus, and toner stored unit | Yoshitaka Yamauchi, Kazumi Suzuki, Hisashi Nakajima, Yu Naito, Akihiro Kaneko | 2020-03-03 |
| 10274856 | Toner for electrophotography, image forming method, and process cartridge | Hisashi Nakajima, Kazumi Suzuki, Masashi Nagayama, Yoshitaka Yamauchi, Yu Naito +1 more | 2019-04-30 |
| 10254674 | Carrier for developer of electrostatic latent image, developer, and image forming apparatus | Masahiro Seki, Hiroyuki Kishida, Haruki Murata, Shinya Nakagawa, Kei Niwayama +1 more | 2019-04-09 |
| 10203620 | Toner, image forming method, and process cartridge | Yu Naito, Kazumi Suzuki, Yoshitaka Yamauchi, Masashi Nagayama, Hisashi Nakajima | 2019-02-12 |
| 10025214 | Carrier, developing agent, image forming apparatus, image forming method, replenishment toner, and process cartridge | Masashi Nagayama, Mariko Takii, Yoshihiro Murasawa, Haruki Murata, Kei Niwayama +4 more | 2018-07-17 |
| 9482971 | White toner, and image forming method and image forming apparatus using the white toner | Kazumi Suzuki, Hisashi Nakajima, Masashi Nagayama, Yoshitaka Yamauchi, Yu Naito | 2016-11-01 |
| 9348259 | Toner housing container and image forming apparatus | Masashi Nagayama, Hisashi Nakajima, Yoshitaka Sekiguchi, Shinya Hanatani, Mariko Takii +6 more | 2016-05-24 |
| 9182694 | Toner, image forming apparatus, image forming method, and process cartridge | Hisashi Nakajima, Masashi Nagayama, Shinya Hanatani, Mariko Takii, Yoshitaka Sekiguchi | 2015-11-10 |
| 9128398 | Toner for forming electrophotographic image, method for manufacturing toner for forming electrophotographic image, image forming method, and process cartridge | Masashi Nagayama, Mitsuo Aoki, Hisashi Nakajima, Mariko Takii | 2015-09-08 |
| 9029061 | Carrier, developer using the carrier, and developing device, image forming method, image forming apparatus and process cartridge using the developer | Koichi Sakata, Minoru Masuda, Hisashi Nakajima, Kimitoshi Yamaguchi, Yutaka Takahashi +2 more | 2015-05-12 |
| 9012117 | Toner, developer, toner container, process cartridge, image forming method, and image forming apparatus | Hisashi Nakajima, Shinya Nakayama, Hiroshi Yamashita | 2015-04-21 |
| 9005862 | Toner, image forming method, and process cartridge | Masashi Nagayama, Hisashi Nakajima, Shinya Hanatani, Mariko Takii, Yoshitaka Sekiguchi | 2015-04-14 |
| 8877418 | Developing method and image forming method | Hisashi Nakajima, Kimitoshi Yamaguchi, Shigenori Yaguchi, Hitoshi Iwatsuki, Toyoaki Tano +4 more | 2014-11-04 |
| 8741529 | Image forming method, image forming apparatus, and process cartridge | Mitsuo Aoki, Hisashi Nakajima, Masashi Nagayama | 2014-06-03 |
| 8728696 | Toner, image forming method, and process cartridge | Mitsuo Aoki, Hisashi Nakajima, Masashi Nagayama, Shigenori Yaguchi | 2014-05-20 |
| 8703376 | Toner and developer | Shinya Nakayama, Hisashi Nakajima, Mitsuo Aoki, Hyo Shu, Hiroyuki Kishida | 2014-04-22 |
| 8652738 | Contact developing method, image forming apparatus, and process cartridge | Kimitoshi Yamaguchi, Shigenori Yaguchi, Hitoshi Iwatsuki, Mariko Takii, Toyoshi Sawada +4 more | 2014-02-18 |
| 8546055 | Toner and developer | Shinya Nakayama, Hisashi Nakajima, Mitsuo Aoki, Hyo Shu, Hiroyuki Kishida | 2013-10-01 |
| 8518626 | Carrier, method for preparing the carrier, developer using the carrier, developer container, and image forming method and apparatus and process cartridge using the developer | Minoru Masuda, Hisashi Nakajima, Kimitoshi Yamaguchi, Koichi Sakata, Hitoshi Iwatsuki +3 more | 2013-08-27 |
| 8481239 | Carrier for two-component developer | Hisashi Nakajima, Kimitoshi Yamaguchi, Minoru Masuda, Yutaka Takahashi, Koichi Sakata +2 more | 2013-07-09 |
| 8475989 | Carrier, method for preparing the carrier, developer using the carrier, developer container, and image forming method and process cartridge using the developer | Yutaka Takahashi, Minoru Masuda, Kimitoshi Yamaguchi, Hisashi Nakajima, Koichi Sakata +3 more | 2013-07-02 |
| 8216758 | Toner, developer, developing device, and image forming apparatus | Yoshitaka Kawase, Yoshiaki Akazawa | 2012-07-10 |
| 8197999 | Method for manufacturing toner, toner, developer, developing device, and image forming apparatus | Yoshitaka Kawase, Yoshiaki Akazawa, Yoritaka Tsubaki, Yoshinori Mutoh, Keiichi Kikawa +1 more | 2012-06-12 |
| 8168363 | Toner and producing method thereof, developer, two-component developer, developing device and image forming apparatus | Yasuo Imura, Hiroshi Onda, Yoritaka Tsubaki | 2012-05-01 |