Patents by Inventor Donald F. MacMillan

Donald F. MacMillan 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).

  • Nuclear fuel column retainer
    Patent number: 3963566
    Abstract: A barrier member fixed in the end of a fuel column retaining spring to prevent contact between the retaining spring and the adjacent end plug of the fuel element whereby contamination of the weld between the cladding tube and end plug with retaining spring material is avoided.
    Type: Grant
    Filed: July 24, 1974
    Date of Patent: June 15, 1976
    Assignee: General Electric Company
    Inventors: Donald F. MacMillan, Bart A. Smith, Richard P. Dubrule