Patents by Inventor Mark R. Pethtel

Mark R. Pethtel 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).

  • Indexed modular dike wall
    Patent number: 9688468
    Abstract: A dike wall section for assembling a dike wall is taught. The dike wall section has an elongate body, a pin at a male end of the body; and a socket at the female end of the body, the pin and socket being operable to connect additional sections to the first section by a pin-in-socket connection having a vertical axis.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: June 27, 2017
    Assignee: POLYSTAR INC.
    Inventors: Mark R. Pethtel, Robert A. Frindt