Patents by Inventor Gustav O. Hughes, Jr.

Gustav O. Hughes, Jr. 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).

  • Low thermal conductivity, high strength refractory castable composition with high abrasion resistance
    Patent number: 4992397
    Abstract: A low thermal conductivity, high strength refractory castable composition with high abrasion resistance consisting essentially of about 55 to 80% by weight amorphous silica, about 5 to 25% by weight of a calcined alumino-silicate aggregate having a density of about 30 to 70 pcf and a particle size of about -10 to +65 mesh, about 5 to 40% by weight of calcined fireclay fines, about 1 to 10% by weight of a flow aid for particle packing, and about 5 to 25% by weight of a calcium aluminate cement.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: February 12, 1991
    Inventor: Gustav O. Hughes, Jr.