Patents Represented by Law Firm Brooks Haid Haffner & Delahunty
  • Process for fining carbonaceous alloys of iron, nickel and/or cobalt
    Patent number: 4006013
    Abstract: In a process for purifying carboniferous iron, nickel and/or cobalt alloys in which the base metal tends to form a carbide, a mixture of at least one halogen and hydrogen is added to the metal melt in order to remove in the form of halides the metals present as impurities.
    Type: Grant
    Filed: April 29, 1975
    Date of Patent: February 1, 1977
    Assignee: Outokumpu Oy
    Inventors: Simo Antero Iivari Makipirtti, John Henrik Relander