Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816364 | Magnetic carrier particles for electrophotographic developer having plated layer of iron oxide | Masao Oishi, Takao Saito, Katsukiyo Ishikawa, Eio Hisajima | 1989-03-28 |