Patents by Inventor Thomas J. Lienert

Thomas J. Lienert 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).

  • Additive manufacturing of ferritic/martensitic steel with improved high temperature strength
    Patent number: 11471946
    Abstract: Techniques for using additive manufacturing (AM) to fabricate creep resistant ferritic/martensitic steel with improved high temperature strength are described. AM processing may be performed on Grade 91 steel powder. Beam powers from about 221 W to about 270 W may be used. Traverse rates from about 675 mm/s to about 825 mm/s may be used. Heat inputs ranging from about 55.7 J/mm3 to about 83.2 J/mm3 may be produced. Creep resistant ferritic/martensitic steel, produced according to the present disclosure, has improved strain yield strength and ductility as compared to wrought steel.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: October 18, 2022
    Assignee: Triad National Security, LLC
    Inventors: Thomas J. Lienert, Stuart Andrew Maloy, Benjamin P. Eftink, Daniel Vega
  • ADDITIVE MANUFACTURING OF FERRITIC/MARTENSITIC STEEL WITH IMPROVED HIGH TEMPERATURE STRENGTH
    Publication number: 20200078865
    Abstract: Techniques for using additive manufacturing (AM) to fabricate creep resistant ferritic/martensitic steel with improved high temperature strength are described. AM processing may be performed on Grade 91 steel powder. Beam powers from about 221 W to about 270 W may be used. Traverse rates from about 675 mm/s to about 825 mm/s may be used. Heat inputs ranging from about 55.7 J/mm3 to about 83.2 J/mm3 may be produced. Creep resistant ferritic/martensitic steel, produced according to the present disclosure, has improved strain yield strength and ductility as compared to wrought steel.
    Type: Application
    Filed: September 6, 2019
    Publication date: March 12, 2020
    Applicant: Triad National Security, LLC
    Inventors: Thomas J. Lienert, Stuart Andrew Maloy, Benjamin P. Eftink, Daniel Vega