Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6397017 | Developer amount detecting method, developing device, process cartridge and electrophotographic image forming apparatus | Hiroaki Sakai, Kazushi Watanabe, Toshiyuki Karakama, Masaru Shimura, Hideki Matsumoto | 2002-05-28 |