Patents by Inventor Robert G. Shaver

Robert G. Shaver 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).

  • Silicon carbide and carbon structures and method of making
    Patent number: 4444894
    Abstract: The process of manufacturing shaped structures comprising silicon carbide and carbon, including forming precursors of heat carbonizable synthetic resin material having dispersed therein siliceous material, heating a batch of precursors to a temperature in the range of 2000.degree. F. to 3000.degree. F.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: April 24, 1984
    Assignee: Versar Inc.
    Inventor: Robert G. Shaver
  • Apparatus for making hollow carbon microspheres
    Patent number: 4279702
    Abstract: An apparatus for making hollow carbon microspheres starting with hollow microballoons made of a material which can by heating be degraded to a carbon structure having a shape similar to that of the original microballoon. The disclosure teaches specific batch treating steps and apparatus for optimizing the rate of production of the microspheres, while at the same time minimizing degradation, rupture and cracking of the resulting carbon product.
    Type: Grant
    Filed: January 10, 1980
    Date of Patent: July 21, 1981
    Assignee: Versar, Inc.
    Inventors: Robert G. Shaver, William R. Leake
  • Process for making hollow carbon microspheres
    Patent number: 4229425
    Abstract: A process and apparatus for making hollow carbon microspheres starting with hollow microballoons made of a material which can by heating be degraded to a carbon structure having a shape similar to that of the original microballoon. The disclosure teaches specific batch treating steps and apparatus for optimizing the rate of production of the microspheres, while at the same time minimizing degradation, rupture and cracking of the resulting carbon product.
    Type: Grant
    Filed: February 9, 1979
    Date of Patent: October 21, 1980
    Assignee: Versar, Inc.
    Inventors: Robert G. Shaver, William R. Leake