Patents by Inventor John La Due Brewster

John La Due Brewster 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).

  • X-ray tube transformer
    Patent number: 4070579
    Abstract: A compact impedance transformer increases the magnitude of a voltage pulse applied to an X-ray generator. A transmission line transformer is implemented using a variable impedance spiral delay line to achieve voltage doubling.
    Type: Grant
    Filed: August 19, 1976
    Date of Patent: January 24, 1978
    Assignee: Hewlett-Packard Company
    Inventor: John La Due Brewster