Patents by Inventor Donald Matthew Dowhower

Donald Matthew Dowhower has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Step-Up Power Transformer with Integral Sine-Wave Filter for PWM Inverters
    Publication number: 20170077861
    Abstract: A pumping system includes an electric motor, a power supply, a variable speed drive connected to the power supply, a transformer connected to the variable speed drive and a power cable connected between the transformer and the electric motor. The transformer includes a sine-wave filter that has inductors contained within an oil-filled central tank.
    Type: Application
    Filed: September 9, 2016
    Publication date: March 16, 2017
    Applicant: GE Oil & Gas ESP, Inc.
    Inventor: Donald Matthew Dowhower