Patents by Inventor Paul Birman

Paul Birman 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).

  • Regulated power supply with auto-transformer output and direct current feedback
    Patent number: 4107620
    Abstract: A bipolar regulated power supply employing an autotransformer to couple the output to the load is provided with a direct current feedback connected directly across the load. In this way losses in the transformer and leads connecting to the load are compensated for and direct current is eliminated from the output transformer when the input is ac coupled.
    Type: Grant
    Filed: October 12, 1976
    Date of Patent: August 15, 1978
    Assignee: Forbro Design Corp.
    Inventors: Paul Birman, Sarkis Nercessian