Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5486898 | Color image forming apparatus with photoreceptor protector | Yozo Fujii, Hiroyuki Moriguchi, Yoshikazu Ikunami, Masahiko Matsunawa, Akihiko Tamura +6 more | 1996-01-23 |
| 5350655 | Electrophotographic photoreceptor with titanyl phthaloycyanine | Tomomi Oshiba, Fumitaka Mochizuki, Hajime Tadokoro, Akira Kinoshita, Kazumasa Watanabe +1 more | 1994-09-27 |
| 5310614 | Electrophotographic photoreceptor having an organic photoelectroconductive light sensitive layer | Hideo Yoshizawa, Kiyoshi Tamaki, Hajime Tadokoro | 1994-05-10 |
| 5252415 | Dot-image forming method and the photoreceptor therefor | Hideo Yoshizawa | 1993-10-12 |
| 5190839 | Electrophotographic photoreceptor | Hajime Tadokoro, Yasuhiro Oda, Hiroshi Yoshioka | 1993-03-02 |
| 5128225 | Electrophotoreceptor comprising a carrier generation layer containing a silicone-modified butyral resin | Yasuhiro Oda, Tomomi Homma | 1992-07-07 |
| 5114815 | Electrophotographic photoreceptor having a light-sensitive layer formed from titanyl phthalocyanine pigment dispersed in a branched ester or alcohol solvent | Yasuhiro Oda, Hiroshi Yoshioka, Hajime Tadokoro | 1992-05-19 |
| 5013625 | Photoreceptor | Yoshio Takizawa, Kunio Sigeta, Shigeki Takeuchi, Hiroshi Yoshioka | 1991-05-07 |
| 4975350 | Photoreceptor having a metal-free phthalocyanine charge generating layer | Akira Hirano, Yasuo Suzuki | 1990-12-04 |
| 4925757 | Electrophotographic photoreceptor for negative electrification | Shigeki Takenouchi, Akira Hirano, Shiori SAITO | 1990-05-15 |
| 4898799 | Photoreceptor | Shigeki Takenouchi | 1990-02-06 |
| 4891288 | Photoreceptor for positive electrostatic charge | Yasuo Suzuki, Masataka Takimoto | 1990-01-02 |
| 4868078 | Imaging member having an amorphous silicon surface layer | Eiichi Sakai, Yuki Okuyama, Toshinori Yamazaki, Satoru Ikeuchi | 1989-09-19 |
| 4755443 | Photoreceptor for electrophotography comprising a phthalocyanine and organic amine compound | Yasuo Suzuki, Hiroyuki Nomori | 1988-07-05 |
| 4600292 | Photoconductive screen | Masataka Takimoto, Hiroyuki Nomori | 1986-07-15 |
| 4599287 | Positive charging photorecptor | Yoshiaki Takei, Yasuo Suzuki, Hiroyuki Nomori | 1986-07-08 |
| 4591542 | Light-sensitive member and preparation thereof for use in electrophotography | Koichi Kudo, Yoshiaki Takei, Hiroyuki Nomori | 1986-05-27 |
| 4540651 | Electrophotographic photosensitive member | Yoshiaki Takei, Hiroyuki Nomori | 1985-09-10 |
| 4477549 | Photoreceptor for electrophotography, method of forming an electrostatic latent image, and electrophotographic process | Yoshiaki Takei, Hiroyuki Nomori | 1984-10-16 |
| 4450218 | Photoconductive receptor for an electrophotography | Yoshiaki Takei, Hiroyuki Nomori | 1984-05-22 |
| 4431722 | Photosensitive element for electrophotography produced by sublimation | Yoshiaki Takei, Naoko Akashi, Hiroyuki Nomori | 1984-02-14 |
| 4415640 | Electrophotographic element with fluorenylidene hydrazone compounds | Satoshi Goto, Kiyoshi Sawada, Osamu Sasaki, Akira Kinoshita, Yoshiaki Takei | 1983-11-15 |
| 4415641 | Electrophotographic light-sensitive element | Satoshi Goto, Akira Kinoshita, Yoshiaki Takei | 1983-11-15 |