Patents Assigned to Doren, Inc.
  • Method of manufacturing a metallurgical addition agent
    Patent number: 4786451
    Abstract: A method of manufacturing a metallurgical addition agent, especially an agent comprising silicon carbide fines, comprises a first step of forming a mix of at least 30% fines, cement and at least 20% water. The next step comprises pressing the wet mix in a mold while squeezing out excess water but leaving sufficient water for hydration of the cement. The pressed shapes are cured at ambient temperatures.
    Type: Grant
    Filed: February 9, 1984
    Date of Patent: November 22, 1988
    Assignee: Doren, Inc.
    Inventor: Donald L. Lampus