Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837121 | Thermally stable light-sensitive compositions with o-quinone diazide and phenolic resin | Andrew J. Blakeney, Thomas R. Sarubbi | 1989-06-06 |
| 4797345 | Light-sensitive 1,2-naphthoquinone-2-diazide-4-sulfonic acid monoesters of cycloalkyl substituted phenol and their use in light-sensitive mixtures | — | 1989-01-10 |