Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857435 | Positive photoresist thermally stable compositions and elements having deep UV response with maleimide copolymer | Frederick R. Hopf, Christopher E. Osuch | 1989-08-15 |
| 4837124 | High resolution photoresist of imide containing polymers | Chengjiu Wu, Anne Mooring, Christopher E. Osuch, James T. Yardley | 1989-06-06 |
| 4810613 | Blocked monomer and polymers therefrom for use as photoresists | Christopher E. Osuch | 1989-03-07 |