Patents by Inventor William G. Doherty

William G. Doherty 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).

  • Patent number: 4866241
    Abstract: An apparatus for coating the internal surface of a tubular object having an irregular internal surface which comprises a combination of arms which enable the torch to be in the optimal coating position as it moves over and coats the internal surface.
    Type: Grant
    Filed: March 30, 1988
    Date of Patent: September 12, 1989
    Assignee: Union Carbide Corporation
    Inventors: William G. Doherty, Mark McCoy, David J. Sharp
  • Patent number: 4441857
    Abstract: In a centrifugal fan having radially directed fan blades, each having, in combination, a serrated surface forming in longitudinal cross-section a sawtooth configuration in the radial direction of the rotating blade with a wear resistant coating over a substantial area of the serrated surface.
    Type: Grant
    Filed: September 25, 1981
    Date of Patent: April 10, 1984
    Assignee: Union Carbide Corporation
    Inventors: John E. Jackson, William G. Doherty