Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12353164 | Electrophotographic apparatus | Akihiro Maruyama, Kenichi Kaku, Shuhei Iwasaki, Kohei Makisumi, Michiyo Sekiya +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, Michiyo Sekiya +3 more | 2024-04-02 |
| 11500301 | Electrophotographic photosensitive member, process cartridge, and electrophotographic image forming apparatus | Kenichi Kaku, Tsutomu Nishida, Kazunori Noguchi, Akihiro Maruyama, Kaname Watariguchi +2 more | 2022-11-15 |
| 11493853 | Electrophotographic photosensitive member, process cartridge and electrophotographic image forming apparatus | Kenichi Kaku, Tsutomu Nishida, Kazunori Noguchi, Akihiro Maruyama, Kaname Watariguchi +2 more | 2022-11-08 |
| 11392050 | Process cartridge and electrophotographic apparatus | Tsutomu Nishida, Yuka Ishiduka, Kenichi Kaku, Nobuhiro Nakamura, Hiroyuki Watanabe +3 more | 2022-07-19 |
| 11366402 | Process cartridge and electrophotographic apparatus using the same | Yuka Ishiduka, Tsutomu Nishida, Nobuhiro Nakamura, Hiroyuki Watanabe, Kenichi Kaku +4 more | 2022-06-21 |
| 11256186 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Tsutomu Nishida, Atsushi Okuda, Yuka Ishiduka, Kenichi Kaku, Nobuhiro Nakamura +1 more | 2022-02-22 |
| 11144007 | Process cartridge and image forming apparatus | Shinichi Hagiwara, Yasukazu Ikami, Kosuke Ikada, Keitaro Nakata | 2021-10-12 |
| 11003102 | Electrophotographic image forming apparatus and process cartridge | Yuka Ishiduka, Tsutomu Nishida, Nobuhiro Nakamura, Hiroyuki Watanabe | 2021-05-11 |
| 10838315 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Tsutomu Nishida, Atsushi Okuda, Yuka Ishiduka, Nobuhiro Nakamura, Hiroyuki Watanabe | 2020-11-17 |
| 10831118 | Electrophotographic photosensitive member and method for producing electrophotographic photosensitive member | Hiroyuki Watanabe, Tsutomu Nishida, Yuka Ishiduka, Atsushi Okuda, Nobuhiro Nakamura +3 more | 2020-11-10 |
| 10747131 | Electrophotographic photosensitive member and method for manufacturing the same as well as process cartridge and electrophotographic image-forming apparatus | Hiroyuki Watanabe, Tsutomu Nishida, Yuka Ishiduka, Atsushi Okuda, Nobuhiro Nakamura +1 more | 2020-08-18 |
| 10747130 | Process cartridge and electrophotographic apparatus | Atsushi Okuda, Tsutomu Nishida, Yuka Ishiduka, Nobuhiro Nakamura, Hiroyuki Watanabe +3 more | 2020-08-18 |
| 10691033 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Tsutomu Nishida, Atsushi Okuda, Yuka Ishiduka, Nobuhiro Nakamura, Hiroyuki Watanabe | 2020-06-23 |
| 10642177 | Process cartridge and image-forming apparatus | Nobuhiro Nakamura, Tsutomu Nishida, Atsushi Okuda, Yuka Ishiduka, Hiroyuki Watanabe | 2020-05-05 |
| 10558132 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Yuka Ishiduka, Tsutomu Nishida, Atsushi Okuda, Hiroyuki Watanabe, Nobuhiro Nakamura +6 more | 2020-02-11 |
| 10558133 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Nobuhiro Nakamura, Tsutomu Nishida, Atsushi Okuda, Yuka Ishiduka, Hiroyuki Watanabe +3 more | 2020-02-11 |
| 10539892 | Electrophotographic photosensitive member, process cartridge, and electrophotographic image-forming apparatus | Tsutomu Nishida, Yuka Ishiduka, Kenichi Kaku, Nobuhiro Nakamura, Hiroyuki Watanabe +1 more | 2020-01-21 |