Ora Veli-Matti Leppanen

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Helsinki, FI

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Patents Grantslast 30 patents

Information Patent Grant
Method and arrangement in connection with a brake chopper
- Patent number 8,159,847
- Issue date Apr 17, 2012
- ABB Oy
- Tero Viitanen
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Earth fault protection of a frequency converter
- Patent number 7,663,850
- Issue date Feb 16, 2010
- ABB Oy
- Ora Veli-Matti Leppänen
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND ARRANGEMENT IN CONNECTION WITH A BRAKE CHOPPER
- Publication number 20090267545
- Publication date Oct 29, 2009
- ABB OY
- Tero Viitanen
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Earth fault protection of a frequency converter
- Publication number 20080151445
- Publication date Jun 26, 2008
- ABB OY
- Ora Veli-Matti Leppanen
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER