Issued Patents All Time
Showing 76–85 of 85 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6134407 | Charging apparatus for charging a moving member to be charged including an elastic rotatable member carrying electroconductive particles on the surface thereof | Harumi Ishiyama, Yukio Nagase, Yasunori Chigono | 2000-10-17 |
| 6128456 | Image forming apparatus having a charging member applying an electric charge through electrically conductive or electroconductive particles to the surface of a photosensitive or image bearing member | Yasunori Chigono, Yukio Nagase, Harumi Ishiyama | 2000-10-03 |
| 6118965 | Image forming apparatus having a contact-type charger | Harumi Ishiyama, Yasunori Chigono | 2000-09-12 |
| 6081681 | Charging device, charging method, process cartridge and image forming apparatus | Yukio Nagase, Harumi Ishiyama, Yasunori Chigono | 2000-06-27 |
| 6038418 | Charging method and a charging device for charging a member to be charged by a flexible charging member | Yasunori Chigono, Harumi Ishiyama | 2000-03-14 |
| 6038420 | Charging device, charging method and image forming apparatus | Harumi Ishiyama, Yasunori Chigono | 2000-03-14 |
| 5933184 | Color image forming device | Masahide Ishigami, Shunji Kitagawa, Kouichi Takemura, Satoru Kobayashi | 1999-08-03 |
| 5815777 | Image forming apparatus | — | 1998-09-29 |
| 5774769 | Charging apparatus and image forming apparatus | Yasunori Chigono | 1998-06-30 |
| 5729802 | Contact charger for charging a photosensitive member | Nobuyuki Ito, Harumi Ishiyama, Tadashi Furuya, Yasunori Chigono, Seiji Mashimo | 1998-03-17 |