Patents by Inventor Lars O Thornblad

Lars O Thornblad 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).

  • High-strength refractory casting compound for the manufacture of monolithic linings
    Patent number: 4244745
    Abstract: High-strength refractory casting compound for monolithic furnace linings, consisting of refractory, durable, granular filler, reactive alumina, high-grade calcium aluminate cement and silica sol as the only liquid to provide castability and ceramic bond. The addition of 6 to 10 parts by weight of a 40% silica sol, i.e. containing 3.6 to 6 parts by weight water, per 100 parts by weight dry material mixed as above is suitable, the reactive alumina constituting 5 to 15 parts by weight and the high-grade calcium aluminate cement constituting 1.5 to 5 parts by weight of said dry material.
    Type: Grant
    Filed: May 31, 1979
    Date of Patent: January 13, 1981
    Assignee: Hoganas AB
    Inventors: Peter H. Havranek, Lars O Thornblad