Patents by Inventor Roland Stickler

Roland Stickler 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 producing doped tungsten filaments by ion-implantation
    Patent number: 4123833
    Abstract: A method of preparing incandescible tungsten filaments which are doped with a predetermined concentration of selected dopant in order to provide filaments with predetermined characteristics. A beam of high velocity ions of the selected dopant are impinged against a target. The target is made up of a thin layer of finely divided tungsten powder. Dopant ions are implanted into the target layer until a predetermined dopant concentration is attained. The ion-implanted tungsten powder is then processed to form tungsten filaments.
    Type: Grant
    Filed: October 13, 1977
    Date of Patent: November 7, 1978
    Assignee: Westinghouse Electric Corp.
    Inventors: Wolfgang J. Choyke, Roland Stickler