Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824752 | Electrophotographic magnetic dry developer containing cerium oxide and hydrophobic silica | Satoshi Yasuda, Mitsuru Uchida, Yusuke Karami | 1989-04-25 |
| 4803142 | Containing magnetic particles having a bulk resistivity of at most 10.sup.4 .sup.5 -10.sup.12 ohm.cm | Hiroshi Fukumoto | 1989-02-07 |