Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5702852 | Multi-color method of toner transfer using non-marking toner and high pigment marking toner | John W. May, Thomas N. Tombs | 1997-12-30 |
| 5674655 | Electrostatographic toners containing metal oxides | Robert A. Guistina | 1997-10-07 |
| 5616444 | Toners and developers containing BIS(ammonium) tetrahalocuprate salts as charge-control agents | John C. Wilson | 1997-04-01 |
| 5604069 | Toners and developers containing ammonium trihalozincates as charge-control agents | John C. Wilson | 1997-02-18 |