Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7801461 | Charging member cleaning roller, charging member cleaning roller for charging device, process cartridge and image forming apparatus | Takuro Hoshio, Yoshihiro Maekawa, Taichi Yamada, Nagahito Ichijo, Naoki Ohta +2 more | 2010-09-21 |
| 7410741 | Toner for electrophotography and developer for electrophotography, as well as image forming method | Katsumi Daimon, Norihito Fukushima, Shuji Sato, Masaaki Suwabe, Kazufumi Tomita | 2008-08-12 |
| 6268096 | Titanyl phthalocyanine crystal and electrophotographic photoreceptor using the same | Hidemi Nukada, Yasuo Sakaguchi, Taketoshi Hoshizaki, Masayuki Nishikawa, Kohichi Yamamoto +1 more | 2001-07-31 |
| 6010810 | Electrophotographic photoreceptor, process for the preparation thereof and image forming apparatus comprising the same | Tomozumi Uesaka, Kazuhiro Koseki, Masahiro Iwasaki, Kiyokazu Mashimo | 2000-01-04 |
| 5955230 | Electrophotographic photoreceptor having protective layer and method for forming images | Takaaki Kimura, Kazuyuki Nakamura, Hirofumi Nakamura | 1999-09-21 |
| 5948579 | Electrophotographic photosensitive material | Kiyokazu Mashimo, Toru Ishii, Katsumi Nukada, Masahiro Iwasaki, Taketoshi Higashi | 1999-09-07 |
| 5702856 | Method for making an image and a photosensitive body for liquid development | Kiyokazu Mashimo, Toru Ishii, Katsumi Nukada | 1997-12-30 |
| 5654119 | Organic electronic device comprising charge-transporting polyester and image forming apparatus | Toru Ishii, Kiyokazu Mashimo, Tomozumi Uesaka, Tomoo Kobayashi, Katsumi Nukada +2 more | 1997-08-05 |
| 5626997 | Electrophotographic process | Kiyokazu Mashimo, Tomozumi Uesaka, Tomoo Kobayashi, Toru Ishii | 1997-05-06 |
| 5578406 | Electrophotographic photoreceptor | Tomoo Kobayashi, Toru Ishii, Kiyokazu Mashimo, Tomozumi Uesaka | 1996-11-26 |
| 5529868 | Electrophotographic photoreceptor | Kiyokazu Mashimo, Tomozumi Uesaka, Toru Ishii, Kazuyuki Nakamura, Takahiro Suzuki | 1996-06-25 |
| 5440029 | Titanyl phthalocyanine crystal | Hidemi Nukada, Yasuo Sakaguchi, Taketoshi Hoshizaki, Masayuki Nishikawa, Kohichi Yamamoto +1 more | 1995-08-08 |
| 5424159 | Electrophotographic photoreceptor | Kiyokazu Mashimo, Toru Ishii, Tomoo Kobayashi, Taketoshi Hoshizaki, Ryosaku Igarashi +1 more | 1995-06-13 |
| 5393629 | Electrophotographic photoreceptor | Katsumi Nukada, Katsumi Daimon, Yasuo Sakaguchi, Kazuo Yamasaki, Masakazu Iijima +7 more | 1995-02-28 |
| 5382489 | Electrophotographic photoreceptor with polycarbonate resin mixture | Kiyokazu Mashimo, Toru Ishii, Tomoo Kobayashi, Taketoshi Hoshizaki | 1995-01-17 |
| 5166017 | Electrophotographic photoreceptor | Taketoshi Hoshizaki, Masahiko Hozumi, Kazuyuki Nakamura, Kiyokazu Mashimo | 1992-11-24 |
| 5032480 | Multilayer electrophotographic photoreceptor | Kiyokazu Mashimo, Masahiko Hozumi, Taketoshi Hoshizaki, Kazuyuki Nakamura | 1991-07-16 |
| 4999268 | Function separated electrophotographic photoreceptor containing selenium | Kiyokazu Mashimo, Masahiko Hozumi, Taketoshi Hoshizaki, Kazuyuki Nakamura | 1991-03-12 |