Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11209740 | Electrophotographic photoreceptor, process cartridge, and image forming apparatus | Yusuke Watanabe, Keiko MATSUKI, Yukiko KAMIJO, Kenta Shingu, Tomoko Suzuki +1 more | 2021-12-28 |
| 10095138 | Electrophotographic photoreceptor, process cartridge, and image forming apparatus | Kosuke Narita | 2018-10-09 |
| 9939743 | Electrophotographic photoreceptor, process cartridge, and image forming apparatus | — | 2018-04-10 |
| 9823598 | Conductive member, process cartridge, and image forming apparatus | Yukiko KAMIJO | 2017-11-21 |
| 9720343 | Conductive member, charging device, process cartridge, and image forming apparatus | Yukiko KAMIJO, Hidemi Nukada | 2017-08-01 |
| 9280079 | Charging member, process cartridge, and image forming apparatus | Takuro Hoshio, Hiroyuki Miura, Kosuke Narita, Jiro Korenaga, Yasuhiro Niida +2 more | 2016-03-08 |
| 9046803 | Charging roll, charging unit, process cartridge, image forming apparatus, and method of manufacturing charging roll | Takuro Hoshio, Shoichi Masuda, Eiichi Iida, Takahiko Hattori, Noboru Wada | 2015-06-02 |
| 8467697 | Cleaning member for image forming apparatus, charging device, unit for image forming apparatus, process cartridge, and image forming apparatus | Takeshi Kawai, Masato Ono, Akihiro Nonaka | 2013-06-18 |
| 8090298 | Electrostatic charging member, electrostatic charging device, process cartridge and image forming apparatus | Takuro Hoshio, Noboru Wada, Makoto Takemoto, Nagahito Ichijo, Naoki Ohta +4 more | 2012-01-03 |
| 7702256 | Image-forming apparatus including an electrophotographic photoreceptor having an undercoat layer with metal oxide particles and an acceptor compound | Hidemi Nukada, Hirofumi Nakamura, Yu Qi, Nan-Xing Hu, Ah-Mee Hor | 2010-04-20 |
| 7561828 | Image-forming apparatus including an electrophotographic photoreceptor having an undercoat layer | Hidemi Nukada, Hirofumi Nakamura, Yu Qi, Ah-Mee Hor, Nan-Xing Hu | 2009-07-14 |
| 7358984 | Image forming apparatus including multibeam exposure unit having surface emitting laser array | Hidemi Nukada, Takahiro Suzuki | 2008-04-15 |
| 6876371 | Image forming apparatus | Takahiro Suzuki, Katsumi Nukada, Mitsuhide Nakamura, Kazuhiro Koseki, Takayuki Yamashita +2 more | 2005-04-05 |
| 6773857 | Electrophotographic photoreceptor, processes for producing the same, process cartridge, and electrophotographic apparatus | Hirofumi Nakamura, Ichiro Takegawa, Hidemi Nukada, Masahiro Iwasaki, Michiko Aida +5 more | 2004-08-10 |
| 6395440 | Electrophotographic photoreceptor, process cartridge and electrophotographic apparatus using the same | Yasuhiro Yamaguchi, Masakazu Iijima, Fumiaki Tambo, Masahiro Iwasaki, Yasuo Sakaguchi | 2002-05-28 |
| 6268096 | Titanyl phthalocyanine crystal and electrophotographic photoreceptor using the same | Hidemi Nukada, Yasuo Sakaguchi, Fumio Ojima, Masayuki Nishikawa, Kohichi Yamamoto +1 more | 2001-07-31 |
| 6020426 | Charge-transporting copolymer, method of forming charge-transporting copolymer, electrophotographic photosensitive body, and electrophotographic device | Yasuhiro Yamaguchi, Fumiaki Tambo, Yasuo Sakaguchi, Ryosaku Igarashi, Masakazu Iijima +1 more | 2000-02-01 |
| 6002901 | Electrophotographic photoreceptor and electrophotographic apparatus | Yashuhiro Yamaguchi, Yasuo Sakaguchi, Ryosaku Igarashi | 1999-12-14 |
| 5965063 | Charge transporting material and method of preparing charge transporting particulates used therein | Takeshi Agata, Masakazu Iijima, Wataru Yamada, Katsumi Nukada, Yasuhiro Yamaguchi | 1999-10-12 |
| 5946018 | Image formation apparatus and method for clear character and smooth image reproduction | Kazuhiko Arai, Yasuhiro Oda, Masahiko Kubo, Nobuyuki Kato | 1999-08-31 |
| 5942361 | Electrophotographic photosensitive member having S-type photo-induced potential decay and electrophotographic apparatus | Yasuo Sakaguchi, Yasuhiro Yamaguchi, Ryosaku Igarashi | 1999-08-24 |
| 5834146 | Electrophotographic photoreceptor containing uniform and nonuniform charge transporting layers | Yasuhiro Yamaguchi, Yasuo Sakaguchi, Ryosaku Igarashi | 1998-11-10 |
| 5576806 | Charging roll for electrophotography | Kozo Oka, Kazuhiko Yanagida, Kazuhiro Koseki | 1996-11-19 |
| 5529842 | Charge roll for electrophotography | Masato Ono, Kazuhiro Koseki, Yukihiro Ishii, Kozo Oka | 1996-06-25 |
| 5440029 | Titanyl phthalocyanine crystal | Hidemi Nukada, Yasuo Sakaguchi, Fumio Ojima, Masayuki Nishikawa, Kohichi Yamamoto +1 more | 1995-08-08 |