Patents by Inventor Ian H. MacBeth

Ian H. MacBeth 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).

  • Dielectric liquid impregnated with gases for use in transformers
    Patent number: 4288772
    Abstract: A flame retardant dielectric coolant for power transformers used in restricted environments consisting of a mixture of an electronegative gas dissolved in silicone fluid for providing improved 60 hertz breakdown voltage resistance to the fluid.
    Type: Grant
    Filed: March 6, 1980
    Date of Patent: September 8, 1981
    Assignee: General Electric Company
    Inventor: Ian H. MacBeth