Patents Assigned to 502 Unimetal
  • Process for refining phosphoric pig iron
    Patent number: 4643766
    Abstract: An improved two phase basic steel refining process for phosphoric pig iron is described which comprises forming a steel having a phosphorus content of not greater than 0.
    Type: Grant
    Filed: March 18, 1986
    Date of Patent: February 17, 1987
    Assignees: 501 Societe Lorraine de Laminage & Continu -Sollac-, 502 Unimetal
    Inventor: Roger Kieger