Patents by Inventor Britta Helmersson

Britta Helmersson 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).

  • Spacer grid
    Patent number: 8958523
    Abstract: The invention relates to a final, ready to use, spacer grid for a nuclear boiling water reactor. The final spacer grid comprises: i) a spacer grid structure made of an alloy that has been formed and assembled such that it constitutes a spacer grid, and ii) an outer oxide coating on the surface of the spacer grid structure. Said alloy is a Ni base alloy that consists of the following: (table) The invention also relates to a method of manufacturing the final spacer grid according to the invention.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: February 17, 2015
    Assignee: Westinghouse Electric Sweden AB
    Inventors: Elena Calota, Lars Hallstadius, Mats Dahlback, Carina Onneby, Britta Helmersson
  • SPACER GRID
    Publication number: 20110064185
    Abstract: The invention relates to a final, ready to use, spacer grid for a nuclear boiling water reactor. The final spacer grid comprises: i) a spacer grid structure made of an alloy that has been formed and assembled such that it constitutes a spacer grid, and ii) an outer oxide coating on the surface of the spacer grid structure. Said alloy is a Ni base alloy that consists of the following: (table) The invention also relates to a method of manufacturing the final spacer grid according to the invention.
    Type: Application
    Filed: May 20, 2009
    Publication date: March 17, 2011
    Applicant: WESTINGHOUSE ELECTRIC SWEDEN AB
    Inventors: Elena Calota, Lars Hallstadius, Mats Dahlback, Carina Onneby, Britta Helmersson