Patents by Inventor Yea-Yang Su

Yea-Yang Su 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).

  • Amorphous oxide surface film for metallic implantable devices and method for production thereof
    Publication number: 20050234545
    Abstract: An amorphous oxide surface film for metallic implantable devices and method for production thereof, wherein the amorphous oxide film is characterized by a high concentration of oxygen, chromium and hydroxyl ions within the film so as to form a non-stoichiometric chromium oxide with significant negative charge; thereby, improving the corrosion resistance and biocompatibility of the metallic implantable device, and thus significantly reducing the degree of thrombogenicity and restenosis.
    Type: Application
    Filed: April 19, 2004
    Publication date: October 20, 2005
    Inventors: Yea-Yang Su, Chun-Che Shih, Chun-Ming Shih, Shing-Jong Lin
  • Reduction of friction during wire drawing
    Patent number: 5666839
    Abstract: A wire or rod drawing apparatus has a drawing die and a metallic tubular member through which the wire passes before entering the die. A D.C. voltage is applied between the rod and the tubular member for creating a voltage difference therebetween, and a lubricant is applied to the wire within the tubular member to function as an electrolyte.
    Type: Grant
    Filed: November 14, 1995
    Date of Patent: September 16, 1997
    Assignee: Georgia Tech Research Corporation
    Inventors: Yea-Yang Su, Miroslav I. Marek, Ming Chien Hung