Patents by Inventor Ing-Marie Andersson-Drugge

Ing-Marie Andersson-Drugge 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 manufacturing ferritic stainless FeCrA1-steel strips
    Patent number: 6197132
    Abstract: The invention provides a method for the continuous manufacture of ferritic stainless steel bands suitable for use in environments with frequent changes in temperature. It has been found preferable to have such band longitudinally displaced through a coating chamber wherein the band is provided with a coating of aluminum that is deposited thereon by means of physical vapor deposition technology during a time period sufficient so that aluminum becomes evenly distributed in the ferrite, after which a homogenization occurs at 950-1150° C.
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: March 6, 2001
    Assignee: Sandvik AB
    Inventor: Ing-Marie Andersson-Drugge