Issued Patents All Time
Showing 25 most recent of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12248273 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Nobuhiro Nakamura, Shuhei Iwasaki, Hiroyuki Watanabe, Fumiyuki Hiyama, Shuntaro Watanabe | 2025-03-11 |
| 12153370 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Shuntaro Watanabe, Nobuhiro Nakamura, Tatsuya Yamaai, Hiroyuki Watanabe, MASATADA HIROTA | 2024-11-26 |
| 12153376 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Shuntaro Watanabe, Nobuhiro Nakamura, Hiroyuki Watanabe, Tatsuya Yamaai, MASATADA HIROTA | 2024-11-26 |
| 12045006 | Electrophotographic photosensitive member | Shuhei Iwasaki, Nobuhiro Nakamura, Hiroyuki Watanabe, Tatsuya Yamaai, Yuka Ishiduka +2 more | 2024-07-23 |
| 11782353 | Method for producing electrophotographic photosensitive member | Nobuhiro Nakamura, Shuhei Iwasaki, Hiroyuki Watanabe, Tatsuya Yamaai, Yuka Ishiduka +2 more | 2023-10-10 |
| 11619907 | Process cartridge | Fumiyuki Hiyama, Shuhei Iwasaki, Hiroyuki Watanabe, Nobuhiro Nakamura, 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 | Nobuhiro Nakamura, Shuhei Iwasaki, Hiroyuki Watanabe, Tatsuya Yamaai, Yuka Ishiduka +2 more | 2022-07-19 |
| 11249407 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Kaname Watariguchi, Masataka Kawahara, Michiyo Sekiya, Kohei Makisumi | 2022-02-15 |
| 11237493 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Kohei Makisumi, Kaname Watariguchi, Masataka Kawahara, Michiyo Sekiya | 2022-02-01 |
| 11181837 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Michiyo Sekiya, Kaname Watariguchi, Masataka Kawahara, Kohei Makisumi | 2021-11-23 |
| 11126097 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Kaname Watariguchi, Masataka Kawahara, Michiyo Sekiya, Kohei Makisumi | 2021-09-21 |
| 10539888 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Kenichi Kaku, Kaname Watariguchi, Kazuko Araki, Michiyo Sekiya | 2020-01-21 |
| 9488945 | Image forming apparatus and image forming method for reducing toner bearing amount, and storage medium thereof | Tetsuya Atsumi, Megumi Uchino, Shunichi Takada | 2016-11-08 |
| 9454103 | Image forming apparatus | Kenta Kubo, Shunichi Takada, Koichi Hashimoto, Tatsuya Tada | 2016-09-27 |
| 9026011 | Image forming apparatus | Kenta Kubo, Juun Horie, Shuji Moriya, Tomoaki Miyazawa, Hirokazu Usami +2 more | 2015-05-05 |
| 7792447 | Image heating apparatus with temperature control in relation to glass transition of toner | Masatsugu Toyonori, Tetsuya Atsumi, Isami Itoh | 2010-09-07 |
| 7751737 | Image forming apparatus which corrects charge potential on an image carrier | Tetsuya Atsumi, Isami Itoh, Masatsugu Toyonori | 2010-07-06 |
| 7643174 | Semiconductor laser drive control device | Isami Itoh, Tetsuya Atsumi, Masatsugu Toyonori | 2010-01-05 |
| 7603064 | Unit for tone-processing image data using screen pattern with different screen angles for toners of same hue and different density | — | 2009-10-13 |
| 7512349 | Image forming apparatus and method featuring correction for compensating differences in surface potential characteristics of an image supporting body | Isami Itoh, Tetsuya Atsumi, Masatsugu Toyonori | 2009-03-31 |
| 7381509 | Toner kit, deep-color cyan toner, pale-color cyan toner, and image forming method | Yasukazu Ayaki, Takeshi Ikeda, Nobuyuki Itoh | 2008-06-03 |
| 7343112 | Image forming apparatus using hypochromatic toner and hyperchromatic toner | Nobuyuki Ito, Takeshi Ikeda, Yukio Nagase, Isami Itoh, Yasukazu Ayaki | 2008-03-11 |
| 7288356 | Toner kit, deep-color cyan toner, pale-color cyan toner, and image forming method | Yasukazu Ayaki, Takeshi Ikeda, Nobuyuki Itoh | 2007-10-30 |
| 6996358 | Toner kit, toner, method for forming an image, and image forming apparatus | Yasukazu Ayaki, Takeshi Ikeda, Yukio Nagase, Nobuyuki Itoh, Isami Itoh | 2006-02-07 |
| 6879788 | Image forming apparatus with density detecting means | Nobuyuki Ito, Takeshi Ikeda, Yukio Nagase, Isami Itoh, Yasukazu Ayaki | 2005-04-12 |