Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4952712 | Process for the preparation of 2,3-dimethoxy-5-methylbenzoquinone | Hideo Orita, Masao Shimizu, Katsuomi Takehira | 1990-08-28 |
| 4943503 | Amorphous silicon photoreceptor | Hideo Nojima, Yoshimi Kojima, Eiji Imada, Toshiro Matsuyama, Shiro Narikawa +1 more | 1990-07-24 |
| 4853309 | Photoreceptor for electrophotography with a-Si layers having a gradient concentration of doped atoms and sandwiching the photoconductive layer therebetween | Hideo Nojima, Yoshimi Kojima, Shiro Narikawa, Toshiro Matsuyama, Eiji Imada +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, Eiji Imada, Toshiro Matsuyama | 1987-08-18 |
| 4666816 | Method of manufacturing an amorphous Si electrophotographic photoreceptor | Yoshimi Kojima, Shiro Narikawa, Hideo Nojima, Eiji Imada, Toshiro Matsuyama +1 more | 1987-05-19 |
| 4615299 | Plasma CVD apparatus for making photoreceptor drum | Toshiro Matsuyama, Yoshimi Kojima, Shiro Narikawa, Shaw Ehara | 1986-10-07 |
| 4400544 | Method for the preparation of cyclohexanone | Katsuomi Takehira, Toshio Ishikawa, Juichi Imamura | 1983-08-23 |