Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9129738 | Oil-filled transformer switching frame | Hartmut Brendel, Matthias Starke, Marikka Hübner, Klaus Herkert, Isidoro Li Pira | 2015-09-08 |
| 8618427 | Spherical cap for high-voltage outgoing lines in oil transformers | Hartmut Brendel, Matthias Starke, Jelena Braatz, Klaus Herkert | 2013-12-31 |