Issued Patents 2002
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6463223 | Electrophotographic image forming apparatus, process cartridge developing device, developer supply container and measuring part therefor | Shirou Sakata, Hideki Matsumoto, Akiyoshi Yokoi | 2002-10-08 |
| 6408142 | Process cartridge and image forming apparatus | Makoto Takeuchi, Masahiko Yashiro, Atsushi Numagami | 2002-06-18 |
| 6408143 | Electrophotographic image forming apparatus | Kazushige Sakurai, Kazushi Watanabe, Hideki Matsumoto | 2002-06-18 |
| 6397017 | Developer amount detecting method, developing device, process cartridge and electrophotographic image forming apparatus | Hiroaki Sakai, Kazushi Watanabe, Masaru Shimura, Hideki Matsumoto, Seiji Saito | 2002-05-28 |
| 6397018 | Developer amount detecting method, developing device, process cartridge and electrophotographic image forming apparatus | Hideki Matsumoto, Kazushige Sakurai, Isao Ikemoto, Kazushi Watanabe | 2002-05-28 |