Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9583652 | Method for the wet-chemical etching back of a solar cell emitter | Agata Lachowicz, Berthold Schum | 2017-02-28 |
| 8563440 | Method for chemically treating a substrate | Andreas Teppe, Berthold Schum, Dieter Franke, Ingo Schwirtlich, Wilfried Schmidt | 2013-10-22 |