Patents by Inventor Harold G. Sowman

Harold G. Sowman 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).

  • Coated particles
    Patent number: 4022660
    Abstract: A nuclear fuel particle wherein a core, up to about 250 microns in diameter, of a normally solid fissionable material is completely encased in a shell having at least two concentric layers. A yielding of carbonaceous material about 5 to about 50 microns thick is disposed inward of a layer of substantially impermeable refractory material, e.g., pyrocarbon, up to about 100 microns thick. Examples of the yielding layer include carbonized synthetic polymer resins and sooty pyrocarbon.
    Type: Grant
    Filed: March 14, 1974
    Date of Patent: May 10, 1977
    Assignee: General Atomic Company
    Inventors: James R. Johnson, Harold G. Sowman
  • Method for producing boron carbide spherules
    Patent number: 4012474
    Abstract: Tiny spherules of boron carbide having a diameter in the range of about 10 microns to about 125 mils, with a smooth, substantially spherical outer surface formed from the molten state by surface tension forces, are made by melting irregular particles of boron carbide or boron compounds which react with carbon to form boron carbide in an isolating medium such as finely divided carbon or boron nitride.
    Type: Grant
    Filed: April 5, 1966
    Date of Patent: March 15, 1977
    Assignee: General Atomic Company
    Inventors: Harold G. Sowman, James R. Johnson