Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11003101 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus | Kazunari Hamasaki | 2021-05-11 |
| 10802411 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus | Kazunari Hamasaki, Kazutaka Sugimoto | 2020-10-13 |
| 10635008 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus | Kazunari Hamasaki, Kazutaka Sugimoto | 2020-04-28 |
| 10539889 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus | Kazunari Hamasaki, Kazutaka Sugimoto | 2020-01-21 |
| 9760029 | Electrophotographic photosensitive member, image forming apparatus, and process cartridge | Kazutaka Sugimoto, Takafumi Matsumoto | 2017-09-12 |
| 9696641 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus | Kazutaka Sugimoto, Takafumi Matsumoto | 2017-07-04 |
| 9213229 | Positively chargeable electrophotographic photosensitive member and image forming apparatus | Yukimasa Watanabe, Junichiro Otsubo, Kazuaki EZURE, Kazutaka Sugimoto | 2015-12-15 |
| 9158264 | Electrophotographic photosensitive member and image forming apparatus including electrophotographic photosensitive member | Kazutaka Sugimoto, Junichiro Otsubo, Yukimasa Watanabe, Kazuaki Edure | 2015-10-13 |
| 9141007 | Monolayer type photoconductor and image forming device | Kazunari Hamasaki, Daisuke Kuboshima, Keiji Maruo, Shiho Kuboshima | 2015-09-22 |
| 8642236 | Electro photographic photoconductor and color image forming apparatus | Kazunari Hamasaki, Yukimasa Watanabe | 2014-02-04 |
| 7844201 | Color image forming apparatus and color image forming method | Kazunari Hamasaki | 2010-11-30 |
| 7838191 | Electrophotographic photoconductor having titanyl phthalocyanine and image forming apparatus | Daisuke Kuboshima, Kazunari Hamasaki | 2010-11-23 |
| 7754402 | Electrophotographic photoconductive member and image forming apparatus | Kazunari Hamasaki, Shiho Kuboshima, Daisuke Kuboshima | 2010-07-13 |