Patents by Inventor Lowell E. Hamilton

Lowell E. Hamilton 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).

  • Sputter target design
    Patent number: 5009765
    Abstract: A cathode sputtering assembly includes a sputter target welded to a corresponding backing member, where the target and backing member are adapted for insertion into a sputtering system. The target has a reduced diameter portion profiled for receipt within a counterbored upper section of the backing member. The target has a beveled surface above the reduced diameter section, and the backing member has an upper tapered edge, where the interface between the sputtering target and the backing member cooperate to define a V-groove. Both the target and the backing member are comprised of aluminum and the target and backing member are TIG welded together with aluminum filler rod.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: April 23, 1991
    Assignee: Tosoh SMD, Inc.
    Inventors: Sohail S. Qamar, Harry W. Conard, Lowell E. Hamilton