Issued Patents 1989
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840864 | New electrostatographic toners and developers containing new charge-control agents | Douglas E. Bugner, Peter S. Alexandrovich, Robert A. Guistina, James H. Anderson | 1989-06-20 |
| 4837393 | Electrostatographic toner particle comprising a polyester containing a covalently bound quaternary phosphonium salt | Peter S. Alexandrovich, John C. Wilson | 1989-06-06 |
| 4837392 | Dry electrostatographic developer containing toner particles comprising a vinyl addition polymer containing a covalently bound quaternary phosphonium salt | James H. Anderson, Douglas E. Bugner, Richard C. Sutton, John C. Wilson | 1989-06-06 |
| 4837394 | electrostatographic toner particle comprising a polyester containing a covalently bound quaternary phosphonium salt | Peter S. Alexandrovich, Thomas A. Jadwin, John C. Wilson | 1989-06-06 |
| 4834921 | Quaternary ammonium salts | Douglas E. Eugner, Peter S. Alexandrovich, Robert A. Guistina | 1989-05-30 |
| 4834920 | New quaternary ammonium salts | Douglas E. Bugner, Peter S. Alexandrovich, Robert A. Guistina, James H. Anderson | 1989-05-30 |
| 4812377 | High resolution polyester developers for electrostatography | John C. Wilson, Domenic Santilli | 1989-03-14 |
| 4812381 | Electrostatographic toners and developers containing new charge-control agents | Douglas E. Bugner, Peter S. Alexandrovich, Robert A. Guistina | 1989-03-14 |
| 4812378 | Electrostatographic toners and developers containing charge-control agents | Douglas E. Bugner, Peter S. Alexandrovich, Robert A. Guistina, James H. Anderson | 1989-03-14 |