Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5369200 | Positive photoresist having improved processing properties | Ulrich Schadeli | 1994-11-29 |
| 5296330 | Positive photoresists containing quinone diazide photosensitizer, alkali-soluble resin and tetra(hydroxyphenyl) alkane additive | Reinhard Schulz, Martin Roth, Wilhelm Knobloch | 1994-03-22 |