Patents by Inventor John N. DuPont

John N. DuPont 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).

  • GRADED TRANSITIONS FOR JOINING DISSIMILAR METALS AND METHODS OF FABRICATION THEREFOR
    Publication number: 20090208773
    Abstract: A transition joint for joining dissimilar metals with the chemical composition of the joint varied in a controlled manner from end to end. The transition joint has a first end of having a chemical composition similar to that of one of the metals to be joined and a second end having a chemical composition similar to that of the other metal with a gradual composition variation between the first and second ends.
    Type: Application
    Filed: August 25, 2008
    Publication date: August 20, 2009
    Applicant: LEHIGH UNIVERSITY
    Inventor: John N. DuPont
  • Neutron absorbing alloys
    Patent number: 6730180
    Abstract: The present invention is drawn to new classes of advanced neutron absorbing structural materials for use in spent nuclear fuel applications requiring structural strength, weldability, and long term corrosion resistance. Particularly, an austenitic stainless steel alloy containing gadolinium and less than 5% of a ferrite content is disclosed. Additionally, a nickel-based alloy containing gadolinium and greater than 50% nickel is also disclosed.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: May 4, 2004
    Assignee: Bechtel BWXT Idaho, LLC
    Inventors: Ronald E. Mizia, Eric L. Shaber, John N. DuPont, Charles V. Robino, David B. Williams