Patents by Inventor Richard James Langguth

Richard James Langguth 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).

  • Preformed duct system
    Patent number: 8689502
    Abstract: A duct bank assembly may include an elongate extending conduit with a length for receiving and passing through a cable or wire and an encasing body encasing the conduit along its longitudinal extent between a first mating end and an opposed second mating end of the body. Each mating end has a shear transfer mechanism associated therewith for engagement with a corresponding shear transfer mechanism of an adjacent duct bank assembly.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: April 8, 2014
    Assignee: Cretex Companies, Inc.
    Inventors: Richard James Langguth, Adam Michael Stenberg
  • PREFORMED DUCT SYSTEM
    Publication number: 20120298244
    Abstract: A duct bank assembly may include an elongate extending conduit with a length for receiving and passing through a cable or wire and an encasing body encasing the conduit along its longitudinal extent between a first mating end and an opposed second mating end of the body. Each mating end has a shear transfer mechanism associated therewith for engagement with a corresponding shear transfer mechanism of an adjacent duct bank assembly.
    Type: Application
    Filed: May 25, 2012
    Publication date: November 29, 2012
    Inventors: Richard James Langguth, Adam Michael Stenberg