Patents by Inventor Berhl E. Wishon

Berhl E. Wishon 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).

  • Lightweight fused silica refractory compositions
    Patent number: 4874726
    Abstract: A refractory composition comprising a fused silica composition comprising a silica compound and a binder and for each 100 parts by weight of said fused silica composition from about 3 to 15 parts by weight of alumina-silica based hollow microspheres.
    Type: Grant
    Filed: November 18, 1987
    Date of Patent: October 17, 1989
    Assignee: Dresser Industries, Inc.
    Inventors: Thomas R. Kleeb, Berhl E. Wishon
  • Alumino-silicate refractory brick
    Patent number: 4391917
    Abstract: Carbonaceous bonded refractory shapes in which the predominant refractory aggregate is andalusite, being characterized by the absence of substantial shrinkage after coking at 2000.degree. F.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: July 5, 1983
    Assignee: Dresser Industries, Inc.
    Inventors: David J. Michael, Berhl E. Wishon