Patents by Inventor Subramani Rajaram

Subramani Rajaram 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).

  • Technique for increasing oxygen incorporation during silicon Czochralski crystal growth
    Patent number: H520
    Abstract: A glass crucible (30) for containing a material from which a silicon crystal melt is produced, wherein the inside surface area of the crucible is increased to react with the silicon melt (31) to increase the oxygen content thereof. The inside surface area may be increased by incorporating inwardly directed silica ribs (40) or concentric, hollow silica cylinders (32) as well as forming corrugations (45) or undulations on the inside surface thereof.
    Type: Grant
    Filed: December 6, 1985
    Date of Patent: September 6, 1988
    Inventors: David L. Johnson, Robert J. Lavigna, Wen Lin, Raymond J. Newman, Subramani Rajaram, Joseph C. Veshinfsky, George Williams