Issued Patents All Time
Showing 1–25 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12429784 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Kohei Makisumi, Kaname Watariguchi, Haruyuki Tsuji | 2025-09-30 |
| 12422760 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Kaname Watariguchi, Kohei Makisumi, Haruyuki Tsuji | 2025-09-23 |
| 12353164 | Electrophotographic apparatus | Akihiro Maruyama, Shuhei Iwasaki, Kohei Makisumi, Michiyo Sekiya, Kaname Watariguchi +4 more | 2025-07-08 |
| 12326688 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Tatsuya Yamaai, Kaname Watariguchi, Shuhei Iwasaki, Akihiro Maruyama | 2025-06-10 |
| 12326689 | Electrophotographic apparatus | Akihiro Maruyama, Shuhei Iwasaki, Tatsuya Yamaai, Kaname Watariguchi, Michiyo Sekiya +2 more | 2025-06-10 |
| 11947275 | Electrophotographic apparatus | Shuhei Iwasaki, Kaname Watariguchi, Akihiro Maruyama, Michiyo Sekiya, Kohei Makisumi +3 more | 2024-04-02 |
| 11500301 | Electrophotographic photosensitive member, process cartridge, and electrophotographic image forming apparatus | Hideharu Shimozawa, Tsutomu Nishida, Kazunori Noguchi, Akihiro Maruyama, Kaname Watariguchi +2 more | 2022-11-15 |
| 11493853 | Electrophotographic photosensitive member, process cartridge and electrophotographic image forming apparatus | Hideharu Shimozawa, Tsutomu Nishida, Kazunori Noguchi, Akihiro Maruyama, Kaname Watariguchi +2 more | 2022-11-08 |
| 11392050 | Process cartridge and electrophotographic apparatus | Tsutomu Nishida, Yuka Ishiduka, Nobuhiro Nakamura, Hiroyuki Watanabe, Hideharu Shimozawa +3 more | 2022-07-19 |
| 11366402 | Process cartridge and electrophotographic apparatus using the same | Yuka Ishiduka, Tsutomu Nishida, Hideharu Shimozawa, Nobuhiro Nakamura, Hiroyuki Watanabe +4 more | 2022-06-21 |
| 11256186 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Hideharu Shimozawa, Tsutomu Nishida, Atsushi Okuda, Yuka Ishiduka, Nobuhiro Nakamura +1 more | 2022-02-22 |
| 10831118 | Electrophotographic photosensitive member and method for producing electrophotographic photosensitive member | Hiroyuki Watanabe, Tsutomu Nishida, Yuka Ishiduka, Atsushi Okuda, Hideharu Shimozawa +3 more | 2020-11-10 |
| 10558133 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Nobuhiro Nakamura, Tsutomu Nishida, Atsushi Okuda, Yuka Ishiduka, Hiroyuki Watanabe +3 more | 2020-02-11 |
| 10558132 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Yuka Ishiduka, Tsutomu Nishida, Atsushi Okuda, Hiroyuki Watanabe, Hideharu Shimozawa +6 more | 2020-02-11 |
| 10539888 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Kaname Watariguchi, Kazuko Araki, Tomohito Ishida, Michiyo Sekiya | 2020-01-21 |
| 10539892 | Electrophotographic photosensitive member, process cartridge, and electrophotographic image-forming apparatus | Tsutomu Nishida, Yuka Ishiduka, Nobuhiro Nakamura, Hiroyuki Watanabe, Hideharu Shimozawa +1 more | 2020-01-21 |
| 10303085 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Taichi Sato, Jumpei Kuno, Takashi Anezaki, Atsushi Fujii | 2019-05-28 |
| 10216105 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Takashi Anezaki, Taichi Sato, Jumpei Kuno, Atsushi Fujii | 2019-02-26 |
| 10203617 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Jumpei Kuno, Takashi Anezaki, Taichi Sato, Atsushi Fujii | 2019-02-12 |
| 10162278 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Jumpei Kuno, Taichi Sato, Takashi Anezaki, Atsushi Fujii | 2018-12-25 |
| 10152002 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Takashi Anezaki, Taichi Sato, Jumpei Kuno, Atsushi Fujii | 2018-12-11 |
| 9778582 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus incorporating an improved undercoat layer | Wataru Kitamura, Ryoichi Tokimitsu, Yuka Ishiduka, Mai Murakami | 2017-10-03 |
| 9411252 | Electrophotographic photosensitive member, method of producing the same, process cartridge, and electrophotographic apparatus | Mai Murakami, Wataru Kitamura, Yuka Ishiduka, Ryoichi Tokimitsu, Hideaki Nagasaka +1 more | 2016-08-09 |
| 9335646 | Electrophotographic photosensitive member, method of producing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Wataru Kitamura, Yuka Ishiduka, Mai Murakami, Ryoichi Tokimitsu, Hideaki Nagasaka +1 more | 2016-05-10 |
| 9069267 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Michiyo Sekiya, Kunihiko Sekido, Atsushi Okuda, Nobuhiro Nakamura, Yota Ito +2 more | 2015-06-30 |