Patents by Inventor Chad Qingshen Cai

Chad Qingshen Cai 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).

  • Medical article with a diamond-like carbon coated polymer
    Patent number: 6761736
    Abstract: Implantable vascular devices and implantable cardiovascular devices suitable for contacting a patient's blood or bodily fluids include a polymer substrate that is at least partly coated with a diamond-like carbon coating. The diamond-like carbon coated polymer substrate can be flexible or rigid. Preferred medical devices include heart valve prostheses with leaflets or orifice rings formed from diamond-like carbon coated polymer materials. Preferred approaches for the deposition of the diamond-like carbon coating are performed at low pressures and include ion beam assisted deposition.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: July 13, 2004
    Assignee: St. Jude Medical, Inc.
    Inventors: Yi-Ren Woo, Avrom M. Brendzel, Chad Qingshen Cai, Stephen A. Peterson