Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5217845 | Photopolymerizable mixture and photopolymerizable copying material containing same | Hans-Dieter Frommeld | 1993-06-08 |
| 5200299 | Quinoline and acridine compounds effective as photoinitiators and containing polymerizable (meth)acryloyl substituents | Hans-Dieter Frommeld | 1993-04-06 |
| 5162190 | 1,2-naphthoquinone-2-diazide-sulfonic acid amides and photosensitive compositions containing these compounds | Wolfgang Zahn, Gerhard Buhr | 1992-11-10 |
| 4966828 | Carbonylmethylene-heterocyclic compounds containing trihalogenomethyl groups, process for their preparation, and light-sensitive mixture containing the compounds | Reinhard Doenges, Hans Ruckert, Ulrich Geissler | 1990-10-30 |
| 4956264 | Radiation-polymerizable mixture | Ulrich Geissler, Walter Herwig | 1990-09-11 |
| 4776892 | Process for stripping light-hardened photoresist layers | Ulrich Geissler | 1988-10-11 |
| 4661432 | Light-sensitive, diazonium group-containing polycondensation product, process for its production, and light-sensitive recording material containing this polycondensation product | Walter Lutz | 1987-04-28 |
| 4659645 | Photosensitive mixture and photosensitive recording material with diazonium salt polycondensation product and free radical radiation polymerizable composition | Hans-Dieter Frommeld, Walter Lutz | 1987-04-21 |
| 4506003 | Positive-working radiation-sensitive mixture | Hans Ruckert, Gerhard Buhr | 1985-03-19 |
| 4492748 | Light-sensitive polycondensation product containing diazonium and dialdehyde groups, and light-sensitive recording material prepared therewith | Walter Lutz, Fritz Erdmann | 1985-01-08 |
| 4401520 | Process for the preparation of screen printing stencils by an electroplating method | Barbara Wildenhain, Hans Ruckert | 1983-08-30 |