Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11130710 | Roofing tile and method for producing such a roofing tile | Andreas Drechsler, Michael Friedrich, Michael Heise, Jurgen Klein, Stephan Westphal | 2021-09-28 |
| 10329198 | Roofing tile and method for producing such a roofing tile | Andreas Drechsler, Michael Friedrich, Michael Heise, Jurgen Klein, Stephan Westphal | 2019-06-25 |