Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853314 | Positive-working radiation-sensitive coating solution and positive photoresist material with monoalkyl ether of 1,2-propanediol as solvent | Hans Ruckert | 1989-08-01 |
| 4764450 | Positive-working radiation-sensitive coating solution and positive photoresist material with monomethyl ether of 1,2-propanediol as solvent | Hans Ruckert | 1988-08-16 |