Patents by Inventor Charles Yaker

Charles Yaker 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).

  • Ceramic cores for manufacturing hollow metal castings
    Patent number: 4190450
    Abstract: Cores for use in the casting of hollow metal parts by directional solidification from temperatures which may exceed 2700.degree. F., in which the strength, dimensional stability and shape of the core is maintained at such high temperatures by formulating the core to contain Cristobalite in an amount of at least 2.5% by weight.
    Type: Grant
    Filed: November 17, 1976
    Date of Patent: February 26, 1980
    Assignee: Howmet Turbine Components Corporation
    Inventors: Ronald R. Robb, Charles Yaker, Lamar Burd