Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10007199 | Single-layer electrophotographic photosensitive member, process cartridge, and image forming apparatus | Tomofumi SHIMIZU, Yasuhiro Oishi | 2018-06-26 |
| 9939744 | Multi-layer electrophotographic photosensitive member | Jun Azuma, Kensuke Okawa, Akihiko Ogata | 2018-04-10 |
| 9213229 | Positively chargeable electrophotographic photosensitive member and image forming apparatus | Yuko Iwashita, Yukimasa Watanabe, Kazuaki EZURE, Kazutaka Sugimoto | 2015-12-15 |
| 9158264 | Electrophotographic photosensitive member and image forming apparatus including electrophotographic photosensitive member | Yuko Iwashita, Kazutaka Sugimoto, Yukimasa Watanabe, Kazuaki Edure | 2015-10-13 |
| 8765337 | Multilayer type electrophotographic photoconductor and image forming apparatus | Keiji Maruo, Jun Azuma | 2014-07-01 |
| 8686133 | Oxo-titanylphthalocyanine crystal, method for producing the same and electrophotographic photoreceptor | Daisuke Kuboshima, Jun Azuma, Yoshio Inagaki, Keiji Maruo | 2014-04-01 |
| 8242261 | Oxo-titanylphthalocyanine crystal, method for producing the same, and electrophotographic photoreceptor | Daisuke Kuboshima, Jun Azuma, Yoshio Inagaki, Keiji Maruo | 2012-08-14 |
| 7855286 | Titanyl phthalocyanin crystal, method for preparing the same and electrophotographic photoconductor | Jun Azuma | 2010-12-21 |
| 7693454 | Image forming apparatus | Jun Azuma | 2010-04-06 |
| 7399564 | Electrophotographic photoconductor | Jun Azuma | 2008-07-15 |
| 4795814 | Process for preparing novel dihydropyridine derivatives | Shinji Nishitani, Junichi Minamikawa, Masanobu Kano, Yoshiaki Manabe | 1989-01-03 |