Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5075729 | Image forming apparatus having a developing and cleaning function using a controlled potential difference between surface and developing bias | Masao Hayashi, Kenichi Tsuneeda | 1991-12-24 |
| 4629673 | Resin-coated carrier for use in two-component electrophotographic developers | Shigenobu Osawa, Tamotsu Murakami, Takashi Mizuma | 1986-12-16 |