Patents by Inventor Ervin D. Griffith

Ervin D. Griffith 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).

  • PLUG-INDUCING MATTER AND METHOD OF PLUGGING A WELLBORE
    Publication number: 20120168161
    Abstract: Plug-inducing matter includes junk shot comprising members and swellable material substantially covering the members which are configured to swell upon exposure to wellbore fluids.
    Type: Application
    Filed: December 29, 2010
    Publication date: July 5, 2012
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Justin Cash Bowersock, Rodney D. Bennett, James R. Korte, Ervin D. Griffith