Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8540891 | Etching pastes for silicon surfaces and layers | Sylke Klein, Werner Stockum | 2013-09-24 |
| 8148191 | Combined etching and doping media | Sylke Klein, Werner Stockum, Wilfried Schmidt, Berthold Schum | 2012-04-03 |
| 7629257 | Combined etching and doping substances | Sylke Klein, Werner Stockum, Wilfried Schmidt, Berthold Schum | 2009-12-08 |
| 6695903 | Dopant pastes for the production of p, p+, and n, n+ regions in semiconductors | Claudia Zielinski, Lilia Heider, Werner Stockum | 2004-02-24 |
| 5455062 | Capillary device for lacquering or coating plates or disks | Eberhard Muhlfriedal, Torsten Gerisch, Karl Appich, Jakob Szekeresch, Martin Kallis | 1995-10-03 |