Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5368975 | Positive-working 1,2-quinone diazide radiation-sensitive mixture and recording material containing urethane compound to diminish developer solubility | Hans W. Frass, Otfried Gaschler, Dieter Mohr, Gerhard Buhr | 1994-11-29 |