Issued Patents All Time
Showing 25 most recent of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12353164 | Electrophotographic apparatus | Akihiro Maruyama, Kenichi Kaku, Shuhei Iwasaki, Kohei Makisumi, Kaname Watariguchi +4 more | 2025-07-08 |
| 12326689 | Electrophotographic apparatus | Kenichi Kaku, Akihiro Maruyama, Shuhei Iwasaki, Tatsuya Yamaai, Kaname Watariguchi +2 more | 2025-06-10 |
| 11947275 | Electrophotographic apparatus | Shuhei Iwasaki, Kaname Watariguchi, Akihiro Maruyama, Kenichi Kaku, Kohei Makisumi +3 more | 2024-04-02 |
| 11614687 | Image forming apparatus and image forming method | Kazunori Noguchi, Daisuke Yoshiba | 2023-03-28 |
| 11409233 | Image forming apparatus and process cartridge | Tetsuya Kinumatsu, Mariko Yamashita, Daisuke Yoshiba | 2022-08-09 |
| 11249407 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Kaname Watariguchi, Tomohito Ishida, Masataka Kawahara, Kohei Makisumi | 2022-02-15 |
| 11237493 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Kohei Makisumi, Kaname Watariguchi, Masataka Kawahara, Tomohito Ishida | 2022-02-01 |
| 11181837 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Kaname Watariguchi, Masataka Kawahara, Tomohito Ishida, Kohei Makisumi | 2021-11-23 |
| 11126097 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Tomohito Ishida, Kaname Watariguchi, Masataka Kawahara, Kohei Makisumi | 2021-09-21 |
| 11086245 | Image forming apparatus, process cartridge, and cartridge set | Mariko Yamashita, Tetsuya Kinumatsu, Daisuke Yoshiba | 2021-08-10 |
| 10539888 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Kenichi Kaku, Kaname Watariguchi, Kazuko Araki, Tomohito Ishida | 2020-01-21 |
| 10372050 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Masashi Nishi, Kunihiko Sekido, Hiroyuki Watanabe | 2019-08-06 |
| 10095136 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Kunihiko Sekido, Masashi Nishi | 2018-10-09 |
| 10065969 | Method for producing carboxylic acid anhydride, method for producing carboxylic imide, and method for manufacturing electrophotographic photosensitive member | Kei Tagami, Akihito Saitoh, Kunihiko Sekido, Masashi Nishi | 2018-09-04 |
| 9921498 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Kunihiko Sekido, Masashi Nishi, Kei Tagami | 2018-03-20 |
| 9864285 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Masashi Nishi, Kunihiko Sekido, Kei Tagami, Yuki Yamamoto | 2018-01-09 |
| 9851648 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Masashi Nishi, Kunihiko Sekido, Kei Tagami, Isao Kawata, Yuto Ito +1 more | 2017-12-26 |
| 9811011 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Masashi Nishi, Kunihiko Sekido, Kei Tagami, Akihito Saitoh | 2017-11-07 |
| 9772568 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Kunihiko Sekido, Kei Tagami, Masashi Nishi | 2017-09-26 |
| 9760030 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Kunihiko Sekido, Kei Tagami, Masashi Nishi | 2017-09-12 |
| 9751880 | Electrophotographic photosensitive member, process cartridge, electrophotographic apparatus, and imide compound | Masashi Nishi, Kunihiko Sekido, Kei Tagami | 2017-09-05 |
| 9535346 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Yota Ito, Nobuhiro Nakamura | 2017-01-03 |
| 9523929 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Nobuhiro Nakamura, Atsushi Fujii, Yota Ito | 2016-12-20 |
| 9494880 | Electrophotographic photosensitive member, method of producing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Kazunori Noguchi, Daisuke Tanaka, Kazumichi Sugiyama, Yota Ito, Kunihiko Sekido +3 more | 2016-11-15 |
| 9383663 | Electrophotographic photosensitive member, method of producing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Yota Ito, Kunihiko Sekido, Atsushi Okuda, Nobuhiro Nakamura, Kazunori Noguchi +3 more | 2016-07-05 |