Patents by Inventor Duane Joe Britschgi

Duane Joe Britschgi 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).

  • Foundry flask
    Publication number: 20020162640
    Abstract: A foundry flask includes at least three discrete corner sections and at least three discrete side sections wherein the yield strength of the corner sections is greater than the yield strength of the side sections. Each one of the corner sections is connected to a pair of the side sections so as to form a foundry flask section that has at least three sides. The foundry flask further includes a bottom member that is connected to the foundry flask section.
    Type: Application
    Filed: May 3, 2001
    Publication date: November 7, 2002
    Applicant: TIC United Corp.
    Inventors: Duane Joe Britschgi, Kenneth George Sandell