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Roland Wald

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  • El Skarholmen, SE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Zero-voltage-switch snubber circuit
    • Patent number 6,518,739
    • Issue date Feb 11, 2003
    • Emerson Energy Systems AB
    • Roland Wald
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Circuit arrangement
    • Patent number 5,619,401
    • Issue date Apr 8, 1997
    • Telefonaktiebolaget LM Ericsson
    • Bror M. Karlsson
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Protective circuit for a hacker type DC converter
    • Patent number 4,695,413
    • Issue date Sep 22, 1987
    • Telefonaktiebolaget LM Ericsson
    • Folke J. B. Ekelund
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents