Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12353164 | Electrophotographic apparatus | Akihiro Maruyama, Kenichi Kaku, Kohei Makisumi, Michiyo Sekiya, Kaname Watariguchi +4 more | 2025-07-08 |
| 12326688 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Tatsuya Yamaai, Kaname Watariguchi, Kenichi Kaku, Akihiro Maruyama | 2025-06-10 |
| 12326689 | Electrophotographic apparatus | Kenichi Kaku, Akihiro Maruyama, Tatsuya Yamaai, Kaname Watariguchi, Michiyo Sekiya +2 more | 2025-06-10 |
| 12248273 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Nobuhiro Nakamura, Tomohito Ishida, Hiroyuki Watanabe, Fumiyuki Hiyama, Shuntaro Watanabe | 2025-03-11 |
| 12045006 | Electrophotographic photosensitive member | Tomohito Ishida, Nobuhiro Nakamura, Hiroyuki Watanabe, Tatsuya Yamaai, Yuka Ishiduka +2 more | 2024-07-23 |
| 11947275 | Electrophotographic apparatus | Kaname Watariguchi, Akihiro Maruyama, Kenichi Kaku, Michiyo Sekiya, Kohei Makisumi +3 more | 2024-04-02 |
| 11782353 | Method for producing electrophotographic photosensitive member | Nobuhiro Nakamura, Tomohito Ishida, Hiroyuki Watanabe, Tatsuya Yamaai, Yuka Ishiduka +2 more | 2023-10-10 |
| 11619907 | Process cartridge | Fumiyuki Hiyama, Hiroyuki Watanabe, Nobuhiro Nakamura, Tomohito Ishida, Shuntaro Watanabe | 2023-04-04 |
| 11392074 | Electrophotographic photosensitive member having outer surface with first and second structure groups, the first structure group having a smaller appearance period and a lower height than the second structure group | Tomohito Ishida, Nobuhiro Nakamura, Hiroyuki Watanabe, Tatsuya Yamaai, Yuka Ishiduka +2 more | 2022-07-19 |
| 11150566 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Akira Sakakibara, Jumpei Kuno, Yota Ito, Kohei Makisumi | 2021-10-19 |
| 11086241 | Electrophotographic photoreceptor, process cartridge, and electrophotographic apparatus | Jumpei Kuno, Akira Sakakibara, Yota Ito, Kohei Makisumi | 2021-08-10 |
| 10942462 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Yota Ito, Akira Sakakibara, Jumpei Kuno, Kohei Makisumi | 2021-03-09 |
| 10831117 | Electrophotographic photosensitive member, electrophotographic apparatus, and process cartridge | Akira Sakakibara, Yota Ito, Jumpei Kuno, Kohei Makisumi | 2020-11-10 |
| 10663913 | Process cartridge and electrophotographic apparatus | Tatsuya Yamaai, Kazunori Noguchi, Akira Sakakibara, Daisuke Miura, Harunobu Ogaki +2 more | 2020-05-26 |
| 10545453 | Process cartridge and electrophotographic apparatus | Kazunori Noguchi, Harunobu Ogaki, Tatsuya Yamaai, Daisuke Miura, Akira Sakakibara +2 more | 2020-01-28 |
| 10452021 | Process cartridge and electrophotographic image forming apparatus | Daisuke Miura, Akira Sakakibara, Tatsuya Yamaai, Kazunori Noguchi, Harunobu Ogaki +2 more | 2019-10-22 |