Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9298112 | Method of manufacturing positively-charged single-layer electrophotographic photoreceptor, positively-charged single-layer electrophotographic photoreceptor, and image forming apparatus | Yasufumi Mizuta, Sakae Saito, Kazunari Hamasaki, Syoji Itsumi, Hiroshi Takemoto | 2016-03-29 |
| 9285692 | Positively-charged single-layer electrophotographic photoreceptor and image forming apparatus | Yasufumi Mizuta, Kazunari Hamasaki | 2016-03-15 |
| 9217981 | Positively-charged single-layer electrophotographic photoreceptor and image forming apparatus | Sakae Saito, Yasufumi Mizuta, Kazunari Hamasaki, Syoji Itsumi, Hiroshi Takemoto | 2015-12-22 |
| 6620570 | Electrophotographic method | Nobuyuki Kashiwagi, Hiroshi Shiomi | 2003-09-16 |
| 5987297 | Image-forming apparatus including a photosensitive material drum and a rubber blade for cleaning toner off of the drum | Tohru Ueno, Hiroaki Iwasaki, Hiroki Morishita | 1999-11-16 |
| 5943527 | Drum unit and earth plate used in the drum unit | Nobuyuki Kashiwagi, Tadashi Sakuma | 1999-08-24 |
| 5622798 | Electrophotographic method with residual charge elimination | — | 1997-04-22 |
| 5530524 | Electrophotographic apparatus with photosensitive drum requiring multiple rotations for production of a copy image on one sheet and method of operating same | Mitsuji Tsujita, Ichiro Yamazato, Nariaki Tanaka, Tomoki Tanaka | 1996-06-25 |
| 5499486 | Process for packing electrophotographic photoreceptor | Yasuyuki Hanatani, Hiroaki Sakai, Tsuneo Oki, Mamoru Uemura | 1996-03-19 |
| 5192633 | Laminate type photosensitive material for electrophotography | Hiroaki Iwasaki, Youichi Takesawa, Hiroshi Takemoto, Masashi Tanaka, Tadashi Sakuma | 1993-03-09 |
| 5128229 | Electrophotosensitive material and method of manufacturing the same | Masato Katsukawa, Mitsuji Tsujita, Satoru Miura | 1992-07-07 |
| 4968579 | Organic laminated photosensitive material of positive charging type and process for preparation thereof | Masashi Tanaka, Hirotsugu Nishikawa | 1990-11-06 |
| 4882253 | Organic laminated photosensitive material of positive charging type | Yoshiaki Kato, Masashi Tanaka, Mitsuji Tsujita, Hirotsugu Nishikawa, Mika Kawaguchi | 1989-11-21 |