Issued Patents 1989
Showing 1–1 of 1 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 |
RO
Ralf Ohlenmacher
Overall (1989): #67,463 of 140,708Top 50%
1
Patents 1989