Patents by Inventor Earle Arthur Ault

Earle Arthur Ault 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).

  • Method of core leach
    Patent number: 5778963
    Abstract: A ceramic core is removed from an investment casting by directing a stream of high pressure alkali solution between about 5,000 psi (345 bar) and about 10.000 psi (690 bar) at the core to loosen and dissolve the core.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: July 14, 1998
    Assignee: United Technologies Corporation
    Inventors: Donald R. Parille, Earle Arthur Ault