Patents by Inventor Jan Tiberg

Jan Tiberg 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 of using rods resistant to hydrosulfuric acid
    Patent number: 4585062
    Abstract: High-strength rods, useful in an acid enviroment, in which the H.sub.2 S partial pressure in gaseous phase may exceed 300 Pa or in which the H.sub.2 S content in liquid phase may have a corresponding equilibrium pressure and/or in which CO.sub.2 or other acidifying substances may be present are manufactured from cold-deformed carbon steel or cold-deformed low-alloyed steel. A preferred composition for the steel is:C O-1.20%Si O-1.0%Mn O-3.0%Cr O-2.0%Ni O-1.0%Mo O-1.0%Cu O-1.0%V O-0.3%Nb O-0.2%Ca O-0.
    Type: Grant
    Filed: July 7, 1983
    Date of Patent: April 29, 1986
    Assignee: SKF Steel Engineering AB
    Inventor: Jan Tiberg
  • Method of using pipes resistant to hydrosulphuric acid
    Patent number: 4570708
    Abstract: High-strength pipes are manufactured from cold-deformed carbon steel or alloyed steel for use in acid environment, in which the H.sub.2 S partial pressure in gaseous phase may exceed 300 Pa or in which the H.sub.2 S content in liquid phase may have a corresponding equilibrium pressure and/or in which CO.sub.2 and other acidifying substances may be present. The weight % composition of the steel is preferably:C 0-1.20%Si 0-1.0%Mn 0-3.0%Cr 0-2.0%Ni 0-1.0%Mo 0-1.0%Cu 0-1.0%V 0-0.3%Nb 0-0.2%Ca 0-0.05%Fe+incidental ingredients and impurities up to 100%.
    Type: Grant
    Filed: April 20, 1983
    Date of Patent: February 18, 1986
    Assignee: SKF Steel Engineering AB
    Inventor: Jan Tiberg