Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5116706 | 1,2,4,5-benzoylenebis(naphtho[1,8-de]pyrimidine) compounds and their use in photosensitive layers | Yoshimi Kojima, Satoshi Katayama, Yoshihide Shimoda, Hiroshi Sugimura | 1992-05-26 |
| 4983741 | 1,2,4,5-benzoylenebis(naphtho[2,3-d]imidazole) compounds and photosensitive members containing them | Satoshi Katayama, Shuhei Tsuchimoto | 1991-01-08 |
| 4963451 | 1,2,4,5-benzoylenebis(anthraquinone[1,2-d]imidazole) compounds and photosensitive members containing them | Satoshi Katayama, Yoshihide Shimoda, Hiroshi Sugimura, Shuhei Tsuchimoto | 1990-10-16 |
| 4943503 | Amorphous silicon photoreceptor | Hideo Nojima, Yoshimi Kojima, Toshiro Matsuyama, Takashi Hayakawa, Shiro Narikawa +1 more | 1990-07-24 |
| 4908457 | 1,2,4,5-benzoylenebis(anthraquinone[1,2-d]imidazole) compounds | Satoshi Katayama, Yoshihide Shimoda, Hiroshi Sugimura, Shuhei Tsuchimoto | 1990-03-13 |
| 4883733 | Electrophotographic printing process using photochromic compound | Hiroshi Sugimura, Yoshimi Kojima, 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, Yoshimi Kojima, Shiro Narikawa, Toshiro Matsuyama +1 more | 1989-08-01 |
| 4687724 | Photoreceptor for electrophotography comprising boron doped a-Si.sub.1-x N.sub.x :H:F | Shaw Ehara, Yoshimi Kojima, Takashi Hayakawa, Toshiro Matsuyama | 1987-08-18 |
| 4666816 | Method of manufacturing an amorphous Si electrophotographic photoreceptor | Yoshimi Kojima, Shiro Narikawa, Takashi Hayakawa, Hideo Nojima, Toshiro Matsuyama +1 more | 1987-05-19 |