Inventor
Hans-Joachim Knaak
Inventor
Erlangen, DE
Overview
Patents· 14 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Mprimary
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems22%
H02JElectric power networks14%
H01HElectric switches11%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution8%
H02HEmergency protective circuit arrangements6%
H05KPrinted circuits6%
B03CMagnetic or electrostatic separation of solid materials from solid materials or fluids3%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables3%
F03DWind motors3%
F27BFurnaces, kilns, ovens or retorts in general3%
PatentTitleYear
10,505,467Converter station with diode rectifier201910,470,259Power supply for a non-linear load with multilevel matrix converters201910,468,884Device and method for controlling a load flow in an alternating-voltage network201910,333,389Converter module for a multi-stage converter and method for operating said converter module201910,243,357Apparatus and method for switching a direct current20199,960,603Installation for transmitting electrical power20189,875,861Device and method for switching a direct current20189,853,562Converter station with diode rectifier20179,831,657Device for switching a direct current in a pole of a DC voltage network20179,806,532'Method for switching an operating current'20179,748,848'Modular multilevel DC/DC converter for HVDC applications'20179,705,406'Modular multi-level DC-DC converter for HVDC applications'20175,471,377'Process for controlling a power supply which supplies power to an electrostatic filter in which secondary circuit states are determined based on measured primary circuit values and in which short circuits are detected'19954,574,574'Tension regulator for a stranding machine'1986Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1986Patents assigned to STOLBERGER MASCHF & CO KG (1)· patent assignee history
1986Based in Aachen, DE· patent location history
1995–2019Patents assigned to SIEMENS AG (13)· patent assignee history
1995–2019Based in Erlangen, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SIEMENS AG | 13 | 1995–2019 |
| STOLBERGER MASCHF & CO KG | 1 | 1986 |
Locations
| Location | Patents | Span |
|---|---|---|
| Erlangen, DE | 13 | 1995–2019 |
| Aachen, DE | 1 | 1986 |