Patents by Inventor Patrik Ölund

Patrik Ölund 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).

  • Air-hardening, low to medium carbon steel for improved heat treatment
    Patent number: 6902631
    Abstract: A steel to be air-hardened as part of heat treatments such as hardening-and-tempering, induction hardening, carburizing, carbonitriding or nitriding comprising, in weight %: C 0.10-0.55; Si 0.97-2.03; Mn 1.14-1.83; Cr 0.00-1.65; Mo 0.36-0.58; and the balance Fe + impurities.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: June 7, 2005
    Assignee: Ovako Steel AB
    Inventors: Thore Lund, Patrik Ölund, Staffan Larsson, Peter Neuman, Oliver Rösch
  • 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
  • Method of soft annealing high carbon steel
    Patent number: 6190472
    Abstract: A method for soft annealing of high carbon steel, characterized by taking objects to be soft annealed directly from a hot forming step and cooling to below Al−20° C.; heating the objects to Al+20° C. or above, and then cooling the objects down to beneath the Al temperature of the steel quickly as in air, which step is performed at least once; heating the objects to Al+20° C. or above, cooling the objects down to about 740° C., and then cooling the objects down to about 690° C. at a cooling rate of 3.5° C./min. or lower; and finally cooling the objects down to ambient temperature.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: February 20, 2001
    Assignee: Ovako Steel AB
    Inventors: Thore Lund, Staffan Larsson, Patrik Ölund