Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6792234 | Developing device having a developer carrier including main and auxiliary magnetic poles and image forming apparatus using the same | Tsukuru Kai, Takeyoshi Sekine, Toshihiko Yamanaka | 2004-09-14 |
| 6701114 | Image forming apparatus and image forming process unit with developer carried on a developer carrier | Takeyoshi Sekine, Tsukuru Kai | 2004-03-02 |