Patents by Inventor William N. Smoot

William N. Smoot 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).

  • Resonant frequency measuring device for gauging coating thickness
    Patent number: 4005359
    Abstract: An electronic thickness gauge for measuring the coating thickness over magnetic and over conductive, non-magnetic substrates by measuring the movement of the low-frequency hump in the response curve for an over-coupled, double-tuned, open-faced transformer when the above-mentioned substrates are placed across the gap between the transformer pole-faces.
    Type: Grant
    Filed: November 7, 1975
    Date of Patent: January 25, 1977
    Inventor: William N. Smoot