Patents by Inventor Kjeld Johansen

Kjeld Johansen 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).

  • METHOD FOR MANUFACTURING TANKS
    Publication number: 20140027023
    Abstract: The invention relates to the manufacture of tanks from one ore more metal plates using a friction stir welding process The metal plate or plates is first formed into a tubular shape with one pair of opposite edges facing one another to form a longitudinal joint line, the opposite edges then being friction stir welded together. At least a part of the friction stir welded region is cold worked and subsequently the tube is heat treated at a temperature above the recrystallisation temperature.
    Type: Application
    Filed: October 3, 2013
    Publication date: January 30, 2014
    Applicant: LUXFER GROUP LIMITED
    Inventor: Kjeld Johansen
  • METHOD FOR MANUFACTURING TANKS
    Publication number: 20080277036
    Abstract: The invention relates to the manufacture of tanks from one ore more metal plates using a friction stir welding process The metal plate or plates is first formed into a tubular shape with one pair of opposite edges facing one another to form a longitudinal joint line, the opposite edges then being friction stir welded together. At least a part of the friction stir welded region is cold worked and subsequently the tube is heat treated at a temperature above the recrystallisation temperature.
    Type: Application
    Filed: May 11, 2007
    Publication date: November 13, 2008
    Applicant: LUXFER GROUP LIMITED
    Inventor: Kjeld Johansen