Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7011920 | Non-magnetic mono-component toner and developing method with the same | Takafumi Nagai, Tadayuki Sawai, Toshihisa Ishida, Kouji Kida, Kazuya Korematsu +1 more | 2006-03-14 |
| 6780553 | Electrophotographic photoreceptor and management system of the same | Hiroshi Sugimura, Kenichi Nagata, Masanori Matsumoto | 2004-08-24 |
| 5492786 | Electrophotographic photoreceptor | Hiroshi Sugimura, Satoshi Katayama, Kazushige Morita, Yoshimasa Fujita, Satoshi Nishigaki +1 more | 1996-02-20 |
| 5489496 | Electrophotographic photoconductor and a method for forming the same | Satoshi Katayama, Satoshi Nishigaki, Kazuhiro Emoto, Hiroshi Sugimura, Kazushige Morita +1 more | 1996-02-06 |
| 5396354 | Switching element array and a liquid crystal display using the same | Yasunori Shimada, Tomohiko Yamamoto, Hiroshi Morimoto, Mitsuhiro Koden, Masaru Yoshida | 1995-03-07 |
| 5116706 | 1,2,4,5-benzoylenebis(naphtho[1,8-de]pyrimidine) compounds and their use in photosensitive layers | Satoshi Katayama, Yoshihide Shimoda, Hiroshi Sugimura, Eiji Imada | 1992-05-26 |
| 4943503 | Amorphous silicon photoreceptor | Hideo Nojima, Eiji Imada, Toshiro Matsuyama, Takashi Hayakawa, Shiro Narikawa +1 more | 1990-07-24 |
| 4883733 | Electrophotographic printing process using photochromic compound | Hiroshi Sugimura, Eiji Imada, Shuhei Tsuchimoto | 1989-11-28 |
| 4853309 | Photoreceptor for electrophotography with a-Si layers having a gradient concentration of doped atoms and sandwiching the photoconductive layer therebetween | Takashi Hayakawa, Hideo Nojima, Shiro Narikawa, Toshiro Matsuyama, Eiji Imada +1 more | 1989-08-01 |
| 4851256 | Apparatus and method for manufacturing photosensitive amorphous silicon objects | Toshiro Matsuyama, Shaw Ehara | 1989-07-25 |
| 4687724 | Photoreceptor for electrophotography comprising boron doped a-Si.sub.1-x N.sub.x :H:F | Shaw Ehara, Eiji Imada, Takashi Hayakawa, Toshiro Matsuyama | 1987-08-18 |
| 4666816 | Method of manufacturing an amorphous Si electrophotographic photoreceptor | Shiro Narikawa, Takashi Hayakawa, Hideo Nojima, Eiji Imada, Toshiro Matsuyama +1 more | 1987-05-19 |
| 4615299 | Plasma CVD apparatus for making photoreceptor drum | Toshiro Matsuyama, Takashi Hayakawa, Shiro Narikawa, Shaw Ehara | 1986-10-07 |