Patents Assigned to Norton AS
  • Process for producing silicon carbide
    Patent number: 6022515
    Abstract: Silicon carbide is produced in two steps in that silicon dioxide and a carbon source in a first step is reacted at a temperature in the range of 1500-1800.degree. C., whereby the silicon dioxide and the carbon source react to form .beta.-silicon carbide. The resulting .beta.-silicon carbide formed is subsequently treated at a temperature of 1800-2300.degree. C. for conversion of the .beta.-silicon carbide into the desired end product, via .alpha.-silicon carbide.
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: February 8, 2000
    Assignee: Norton AS
    Inventors: Kjell Arnulf St.o slashed.le, Sjur Vidar Velken