Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12237135 | Vacuum interrupter | Klaus Hoepfl, Markus Zintl, Anniyappan Palani | 2025-02-25 |
| 12142448 | Switch for an on-load tap changer and load transfer switch for an on-load tap changer | Christian Hammer, Markus Zintl | 2024-11-12 |
| 11545313 | Load transfer switch for on-load tap changer, and on-load tap changer | Klaus Hoepfl, Gregor Wilhelm, Eduard Schmidt, Stefan Herold, Elke Wuersching | 2023-01-03 |
| 11120962 | Load transfer switch for an on-load tap changer and continuous main switch and disconnecting switch for same | Eduard Schmidt, Gregor Wilhelm, Christian Hammer | 2021-09-14 |
| 10102990 | On-load tap changer | Eduard Schmidt | 2018-10-16 |
| 9640340 | Selector switch for tap-changing transformers and support arm for a tap selector thereof | Hurbert Zwirglmaier, Thomas Schuster, Ulli Laubereau, Gerhard Baeuml | 2017-05-02 |
| 9640341 | On-load tap changer | Klaus Hoepfl, Dieter Dohnal, Christian Kotz | 2017-05-02 |
| 9640339 | On-load tap changer, method for installing a load transfer switch insert in the on-load tap changer, and kerosene drain screw | Klaus Hoepfl, Hubert Zwirglmaier | 2017-05-02 |
| 9406454 | Arrangement of vacuum switching tubes in a load transfer switch | Klaus Hoepfl, Christian Kotz | 2016-08-02 |
| 9257246 | Stepping switch with vacuum switching tubes | Klaus Hoepfl | 2016-02-09 |
| 9251971 | On-load tap changer | Wolfgang Albrecht, Klaus Hoepfl | 2016-02-02 |
| 9165726 | Tap changer and vacuum switching tube for such a tap changer | Dieter Dohnal, Klaus Hoepfl, Christian Pircher | 2015-10-20 |
| 9030175 | Tap changer with vacuum switch tubes | — | 2015-05-12 |
| 8927885 | Mechanical switch contact | Klaus Hoepfl | 2015-01-06 |
| 8748758 | On-load tap changer with energy storage mechanism | Klaus Hoepfl, Gregor Wilhelm | 2014-06-10 |
| 8420959 | Manual drive | Armin Burghauser | 2013-04-16 |
| 8404986 | Manual drive for a tap changer for tap-changing transformers | Armin Burghauser | 2013-03-26 |
| 7683282 | Mechanical switching contact | Gunter Kloth | 2010-03-23 |
| 7652218 | Energy store | Klaus Hoepfl, Gregor Wilhelm | 2010-01-26 |
| 7518075 | Energy accumulator | Klaus Hoepfl | 2009-04-14 |
| 6998547 | On-load tap changer for a sequence switch | Gunter Kloth | 2006-02-14 |
| 6347615 | Damper for tap-changer vacuum switch | Klaus Hopfl | 2002-02-19 |
| 6091032 | Tap changer | Dieter Dohnal, Klaus Hopfl | 2000-07-18 |
| 6060669 | Tap selector | Dieter Dohnal, Klaus Hopfl | 2000-05-09 |