Patents by Inventor Kevin J. Barringer

Kevin J. Barringer 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).

  • Pichia transformation
    Patent number: 4929555
    Abstract: The present invention provides a method for making whole cells of methylotrophic species of genus Pichia competent for transformation by DNA and a method for transforming with DNA whole cells of such species.
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: May 29, 1990
    Assignee: Phillips Petroleum Company
    Inventors: James M. Cregg, Kevin J. Barringer