Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855396 | Polyesters containing covalently bound quaternary phosphonium salts | John C. Wilson | 1989-08-08 |
| 4837394 | electrostatographic toner particle comprising a polyester containing a covalently bound quaternary phosphonium salt | Peter S. Alexandrovich, Lawrence P. DeMejo, John C. Wilson | 1989-06-06 |