Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6978100 | Process cartridge, developing cartridge and developing roller | Kojiro Yasui, Hironobu Isobe, Hiroshi Sato, Seiichi Shinohara, Syuhei Kawasaki | 2005-12-20 |
| 6915092 | Process cartridge remanufacturing method | Koji Yamaguchi, Tomonori Mori | 2005-07-05 |
| 6782219 | Cartridge and electrophotographic image forming apparatus | Hironobu Isobe, Koji Yamaguchi | 2004-08-24 |
| D477631 | Developing cartridge | Tomonori Mori, Hironobu Isobe | 2003-07-22 |