Patents by Inventor Anna Heedman

Anna Heedman 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).

  • FERRITIC STAINLESS STEEL ALLOY
    Publication number: 20090053092
    Abstract: The application describes a lead-free ferritic stainless steel alloy having the following composition, all contents given in percent by weight: C ?0.1 Si ?2 Mn 0.1-2 S 0.08-0.4? Cr 16-25 Ni ?2 Mo 1-5 Cu 0.01-3.0? Ca ?0.006 Sn ?0.15 B ?0.02 X 0.01-0.5 and/or REM 0.01-1 the balance Fe as well as impurities, where X is 2 * Te + 1 * Se + 1 * Bi. The alloy has good machinability and good corrosion resistance, in comparison with the corresponding alloys containing lead.
    Type: Application
    Filed: June 15, 2005
    Publication date: February 26, 2009
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Mattias Sandstrom, Anna Heedman, Ylva Trogen