Patents by Inventor Helena Andersson, legal representative

Helena Andersson, legal representative 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).

  • Iron-base alloy containing chromium-tungsten carbide and a method of producing it
    Patent number: 7442261
    Abstract: In a method of producing an iron-based alloy containing chromium carbide, pieces of cemented carbide are added to an iron-based melt containing carbon, e.g. cast iron. Chromium, which regulates the solution of WC into the melt, is also added. The molten alloy is then cast. An alloy comprising chromium-tungsten-carbide in a ferrous matrix is produced. Uses of the alloy are claimed.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: October 28, 2008
    Assignee: Proengco Tooling AB
    Inventors: Mikael Andersson, legal representative, Henrik Andersson, legal representative, Helena Andersson, legal representative, Anders Nilsson, Jan-Eric Ståhl, Carl-Håkan Andersson