Patents by Inventor Mark Offenburger

Mark Offenburger 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).

  • Threaded fastener
    Patent number: 4802807
    Abstract: A compositely plated, threaded fastener has zinc plating applied to a threaded fastener core and an aluminum plating is applied to the zinc underplating. Optionally, a polymeric top coat can be applied to the aluminum plating for pigmented appearance. The combination of the composite aluminum and zinc platings not only provide the fasteners with improved corrosion resistance but also provide particularly reduced torque load in driving such fasteners, for example, in drilling applications.
    Type: Grant
    Filed: April 14, 1988
    Date of Patent: February 7, 1989
    Assignee: Illinois Tool Works Inc.
    Inventors: Mark Offenburger, Eric Parker, Frank Ptak