Patents by Inventor Roger Björn

Roger Björn 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).

  • Bearing steel
    Patent number: 6284065
    Abstract: An improved bearing steel, adapted for the manufacturing of thick-walled bearing rings, containing, in weight-%: C 1.00-1.10 Si 0.15 max Mn 1.35-1.65 Cr 1.70-1.90 Ni 1.00-1.15 Mo 0.40-0.50 Cu 0.30 max. Al 0.015-0.050 the balance being Fe and normal residual elements and contaminants.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: September 4, 2001
    Assignee: Ovaka Steel AB
    Inventors: Thore Lund, Staffan Larsson, Patrik Ölund, Roger Björn, Mikael Sundqvist