Patents by Inventor Christopher J. Burkhard

Christopher J. Burkhard 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).

  • Connecting clip
    Patent number: 5358423
    Abstract: A clip for forming an electrical and mechanical connection at the junction of two rods to afford cathodic protection for said rods. The clip is electrically conductive and can have a sacrificial metal coating or metal insert.
    Type: Grant
    Filed: November 24, 1993
    Date of Patent: October 25, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Christopher J. Burkhard, Daryl A. Ramm