Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6606469 | Developing apparatus mounted on image forming apparatus | Ken Kikuchi, Kazushi Watanabe, Toru Oguma | 2003-08-12 |
| 6587650 | Electrophotographic image forming apparatus, process cartridge, and developing device having developer amount detector | Toru Oguma | 2003-07-01 |
| 6571070 | Process cartridge and image forming apparatus | Toru Oguma, Kazushi Watanabe | 2003-05-27 |
| 6463223 | Electrophotographic image forming apparatus, process cartridge developing device, developer supply container and measuring part therefor | Toshiyuki Karakama, Shirou Sakata, Hideki Matsumoto | 2002-10-08 |
| 6253036 | Electrophotographic image forming apparatus, process cartridge, developing device and measuring part | Toshiyuki Karakama, Shirou Sakata, Hideki Matsumoto | 2001-06-26 |
| 5940658 | Toner frame and process cartridge | Minoru Sato, Yoshiyuki Batori | 1999-08-17 |