Issued Patents All Time
Showing 1–25 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12429785 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Taichi Sato, Kohei Makisumi, MASATADA HIROTA, Kunihiko Sekido | 2025-09-30 |
| 12298709 | Toner and method for producing toner | Hiroki Akiyama, Hiroki Kagawa, Shuhei Moribe | 2025-05-13 |
| 12248273 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Nobuhiro Nakamura, Tomohito Ishida, Shuhei Iwasaki, Hiroyuki Watanabe, Fumiyuki Hiyama | 2025-03-11 |
| 12153376 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Tomohito Ishida, Nobuhiro Nakamura, Hiroyuki Watanabe, Tatsuya Yamaai, MASATADA HIROTA | 2024-11-26 |
| 12153370 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Tomohito Ishida, Nobuhiro Nakamura, Tatsuya Yamaai, Hiroyuki Watanabe, MASATADA HIROTA | 2024-11-26 |
| 12078960 | Toner and method for producing toner | Hiroki Kagawa, Shuhei Moribe, Hiroki Akiyama | 2024-09-03 |
| 11809132 | Toner | Yuujirou Nagashima, Yasuhiro Hashimoto, Koji Nishikawa, Tomoya Nagaoka, Hiroki Akiyama +1 more | 2023-11-07 |
| 11796930 | Magnetic toner | Hiroki Akiyama, Hiroki Kagawa | 2023-10-24 |
| 11619907 | Process cartridge | Fumiyuki Hiyama, Shuhei Iwasaki, Hiroyuki Watanabe, Nobuhiro Nakamura, Tomohito Ishida | 2023-04-04 |
| 11415902 | Toner | Hiroki Akiyama, Hiroki Kagawa | 2022-08-16 |
| 11112709 | Toner and toner manufacturing method | Tatsuya Saeki, Hiroki Akiyama, Hiroki Kagawa, Takashi Matsui | 2021-09-07 |
| 10969704 | Magnetic toner and method for manufacturing magnetic toner | Hiroki Kagawa, Hiroki Akiyama, Tatsuya Saeki, Takashi Matsui | 2021-04-06 |
| 10768540 | External additive, method for manufacturing external additive, and toner | Tatsuya Saeki, Atsuhiko Ohmori, Shuhei Moribe, Hiroki Akiyama, Kazumichi Nakahama +1 more | 2020-09-08 |
| 10747134 | External toner additive, method for producing external toner additive, and toner | Tatsuya Saeki, Atsuhiko Ohmori, Shuhei Moribe, Hiroki Akiyama, Kazumichi Nakahama +1 more | 2020-08-18 |
| 10409180 | Resin fine particles, method of producing resin fine particles, method of producing resin particles, and method of producing toner | Shinnosuke Koji, Sakae Suda, Yusuke Kosaki, Shohei Fukuya, Tetsuya Kinumatsu +5 more | 2019-09-10 |
| 10078280 | Methods for producing toner particle and producing resin particle | Kenji Aoki, Yusuke Kosaki, Noritaka Toyoizumi, Tetsuya Kinumatsu, Toshifumi Mori +5 more | 2018-09-18 |
| 9964876 | Toner and method for manufacturing the same | Noritaka Toyoizumi, Yusuke Kosaki, Tetsuya Kinumatsu, Kenji Aoki, Toshifumi Mori +5 more | 2018-05-08 |
| 9869943 | Method of producing toner and method of producing resin particle | Kenji Aoki, Yusuke Kosaki, Tetsuya Kinumatsu, Noritaka Toyoizumi, Atsushi Tani +1 more | 2018-01-16 |
| 9857713 | Resin particle and method of producing the resin particle, and toner and method of producing the toner | Yusuke Kosaki, Tetsuya Kinumatsu, Kenji Aoki, Noritaka Toyoizumi, Takaaki Kaya +4 more | 2018-01-02 |
| 9823595 | Toner | Noritaka Toyoizumi, Yusuke Kosaki, Tetsuya Kinumatsu, Kenji Aoki, Takaaki Kaya +2 more | 2017-11-21 |
| 9811016 | Toner | Kenji Aoki, Tetsuya Kinumatsu, Yusuke Kosaki, Noritaka Toyoizumi, Takaaki Kaya +2 more | 2017-11-07 |
| 9798262 | Method of producing toner | Noritaka Toyoizumi, Yusuke Kosaki, Tetsuya Kinumatsu, Kenji Aoki, Takaaki Kaya +4 more | 2017-10-24 |
| 9798256 | Method of producing toner | Yusuke Kosaki, Noritaka Toyoizumi, Tetsuya Kinumatsu, Kenji Aoki, Takaaki Kaya +2 more | 2017-10-24 |
| 9658554 | Method of producing toner and method of producing resin particle | Tetsuya Kinumatsu, Kenji Aoki, Yusuke Kosaki, Noritaka Toyoizumi, Takaaki Kaya +2 more | 2017-05-23 |
| 9625844 | Toner | Takaaki Kaya, Tetsuya Kinumatsu, Toshifumi Mori, Ayako Okamoto, Kenji Aoki +2 more | 2017-04-18 |