Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4829048 | Thermal transfer printing | Peter Gregory | 1989-05-09 |
| 4804747 | Azo compound having one or two aliphatic or cycloaliphatic groups containing a total of 8 to 40 carbon atoms therein | Simon Allen, Paul F. Gordon | 1989-02-14 |