Patents by Inventor Christian Carl Sundberg

Christian Carl Sundberg 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).

  • Rectangular tilt-up concrete tank construction
    Patent number: 7171787
    Abstract: A rectangular tilt-up concrete tank includes a concrete slab with a metal plate anchored thereto, the metal plate defining at least one substantially linear concrete side wall location. A plurality of preformed concrete side panels each having metal plates attached along a bottom edge and opposing side edges are welded in a liquid-tight weld to the metal plate defining the concrete side wall location and a side metal plate of each side panel is welded to a metal side plate of an adjacent side panel in a liquid-tight weld to define a concrete side wall. Horizontal and vertical post-tensioning sleeves are provided in the side panels for receiving post-tensioning tendons.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: February 6, 2007
    Assignee: CH2M Hill Inc.
    Inventors: David Thomason, Mary Williams Goodson, Christian Carl Sundberg, Michael Louis Doleac
  • Rectangular tilt-up concrete tank construction
    Publication number: 20040261326
    Abstract: A rectangular tilt-up concrete tank includes a concrete slab with a metal plate anchored thereto, the metal plate defining at least one substantially linear concrete side wall location. A plurality of preformed concrete side panels each having metal plates attached along a bottom edge and opposing side edges are welded in a liquid-tight weld to the metal plate defining the concrete side wall location and a side metal plate of each side panel is welded to a metal side plate of an adjacent side panel in a liquid-tight weld to define a concrete side wall. Horizontal and vertical post-tensioning sleeves are provided in the side panels for receiving post-tensioning tendons.
    Type: Application
    Filed: June 24, 2003
    Publication date: December 30, 2004
    Applicant: CH2M HILL, Inc.
    Inventors: David Thomason, Mary Williams Goodson, Christian Carl Sundberg, Michael Louis Doleac