Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5683845 | Positively chargeable toner for nonmagnetic one-component developing method | Jun Shimizu, Masayuki Maruta | 1997-11-04 |
| 5637430 | Nonmagnetic one-component toner | Jun Shimizu, Yasuhiro Hidaka, Masayuki Maruta | 1997-06-10 |