Inventor · disambiguated record
Ora Veli-Matti Leppänen
Also filed as: LEPPAENEN ORA VELI-MATTI · LEPPÄNEN ORA VELI-MATTI
5 granted patents·23 citations·filing 2007–2015
75Inventor score
Top patents by PatentIndex Score
5 records- 0168US8970063B2Method and arrangement for balancing voltages of series connection of storage units for electrical energyLEPPÄNEN ORA VELI-MATTI·Filed 2011·Granted Mar 3, 2015·6 cites·8 claims
- 0267US8159847B2Method and arrangement in connection with a brake chopperVIITANEN TERO·Filed 2009·Granted Apr 17, 2012·7 cites·8 claims
- 0365US7663850B2Earth fault protection of a frequency converterABB OY·Filed 2007·Granted Feb 16, 2010·5 cites·11 claims
- 0459US8502524B2Current measurement in an inverter unit and a frequency converterLEPPAENEN ORA VELI-MATTI·Filed 2009·Granted Aug 6, 2013·5 cites·18 claims
- 0544US10374543B2Ultracap-based solutions for ride-through of synchronous machine drivesABB TECHNOLOGY LTD·Filed 2015·Granted Aug 6, 2019·0 cites·19 claims
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