Patents by Inventor Jean C. Wittmann

Jean C. Wittmann 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).

  • Deposition of highly-oriented PTFE films and uses therefor
    Patent number: 5180470
    Abstract: Broadly the invention is a method for forming a highly-oriented crystal structure on a substrate in a known orientation comprising the steps of forming a film of highly-oriented poly(tetrafluoroethylene) with an orientation angle of less than 20.degree. on a surface of the substrate with its nominal orientation director along a desired orientation director and then depositing a crystal-forming material on the highly-oriented poly(tetrafluoroethylene) to form the structure. Specific examples include a method for growing a highly-oriented crystal on filament substrates, a method for producing extruded polymer articles (fibers, tapes, and solids) containing oriented crystal growth to improve the characteristics thereof, and a method for storing and retrieving data.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: January 19, 1993
    Assignee: The Regents of the University of California
    Inventors: Paul Smith, Jean C. Wittmann