Patents by Inventor Ronald D. Northern

Ronald D. Northern 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).

  • Post tensioning anchor system
    Patent number: 5271199
    Abstract: The present invention provides a post tensioning anchor system having a tensioning tendon for securement in a concrete structure with an anchor plate dimensioned to receive the same sized fitting on both faces thereof, and a cap for placement on either face of the anchor plate to prevent deterioration of the tendon anchorage.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: December 21, 1993
    Assignee: Incast Anchorage Systems, Inc.
    Inventor: Ronald D. Northern