Patents by Inventor Yuan S. Shen

Yuan S. Shen 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 making improved silver-tin-indium contact material
    Patent number: 4846901
    Abstract: A novel method of producing a silver, tin-indium oxide contact material is disclosed. The material is fabricated by alloying silver with tin and indium, hermetically joining two sheets of such alloy with a layer of release material therebetween to form a multilayer structure, internally oxidizing the structure at elevated pressure and separating it into component parts. The inventiive process produces a member substantially free of oxide depleted regions about at least one surface.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: July 11, 1989
    Assignee: Engelhard Corporation
    Inventors: Antonio Lima, Yuan S. Shen