Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11788879 | State analysis of an inductive operating resource | Anatoli Saveliev | 2023-10-17 |
| 11125801 | Method and apparatus for monitoring the loss factor of capacitor bushings | Junliang Wu, Ulrich Sundermann | 2021-09-21 |
| 11054486 | Method and device for monitoring capacitor bushings for an alternating-current grid | Junliang Wu, Udo Hertel | 2021-07-06 |
| 10193341 | Method of operating parallel transformers | Stefan Abelen, Daniel Preissler, Audrius Ilgevicius, Tobias Wagner, Tobias Gruber | 2019-01-29 |
| 10132789 | Apparatus and method for detecting gas | Sebastian HOLLUNDER, Martin KUBICZEK, Juergen Schuebel | 2018-11-20 |
| 9918359 | Device and method for reducing network reactions when an electric arc furnace is in operation | Klaus Krueger, Dieter Dohnal, Alexei Babizki | 2018-03-13 |
| 9759761 | Method and apparatus for monitoring capacitor bushings for a three-phase AC system | Junliang Wu, Ulrich Sundermann | 2017-09-12 |
| 9557753 | Method for regulating the voltage of a transformer | Ansgar Hinz, Helmut Proelss | 2017-01-31 |
| 9275788 | Control transformer | Jochen Von Bloh, Dieter Dohnal | 2016-03-01 |
| 9218902 | Power transformer with electronic components | Volker Karrer, Alexander Reich | 2015-12-22 |
| 9123464 | Transformer with on-load tap changer | Jochen Von Bloh, Volker Karrer, Dieter Dohnal | 2015-09-01 |
| 8397587 | Paddle-type flowmeter with magnetic coupling | Reiner Brill, Kai Haemel, Ulrich Rehnelt | 2013-03-19 |
| 7833312 | Method of drying an air dehumidifier | Reiner Brill, Kai Haemel, Alexander Lodig | 2010-11-16 |
| 7563310 | Air dehumidifier for oil-insulated transformers, choke coils and steps switches | Manfred Eichert, Kurt Kugler, Rainer Brill | 2009-07-21 |
| 7468091 | Method for dehumidifying air and air dehumidifier for oil-insulated transformers, reactance coils and step switches | Dieter Dohnal, Ansgar Hinz, Reiner Brill | 2008-12-23 |
| 7191648 | Level gauge for oil-filled transformer, choke, or tap changer | Reiner Brill, Kai Hämel | 2007-03-20 |
| 7179369 | Oil filter system | Dieter Dohnal | 2007-02-20 |
| 6965217 | Tap changing assembly for power transformer | Dieter Dohnal | 2005-11-15 |
| 6708562 | Level gauge for oil-filled transformers, chokes and tap changers | Werner Krüger | 2004-03-23 |
| 6709496 | Air demoisturizer for oil-insulated transformers, chokes and tap changers | Rainer Brill, Kurt Kugler, Werner Krüger | 2004-03-23 |
| 6529858 | Method of controlling step switches | Dieter Dohnal, Mario Schmeckebier | 2003-03-04 |
| 6224255 | Temperature pickup for oil-filled vessels and temperature measurement method | Manfred Stadelmayer | 2001-05-01 |
| 6124726 | Method of monitoring a tap selector | Dieter Dohnal, Manfred Stadelmayer | 2000-09-26 |
| 6100674 | Method of monitoring a tap changer | Dieter Dohnal, Christian Heudecker | 2000-08-08 |