Patents by Inventor Jean-Francois Carle

Jean-Francois Carle 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).

  • Pulling processes and equipment for growing silicon crystals having high and controlled carbon content
    Patent number: 4705591
    Abstract: Silicon crystals with high and controlled predictable carbon content can be grown by controlling oxygen introduced into the pulling chamber during the melting in standard Czochralski silicon crystal pullers.Carbon concentration profile of grown crystals can be deduced from the carbon monoxide [CO] concentration real time monitoring, through its integral taken during the whole pulling duration. This process is reproducible, and the carbon content in the silicon is consistent. Means to practice this method are also disclosed.
    Type: Grant
    Filed: December 6, 1985
    Date of Patent: November 10, 1987
    Assignee: International Business Machines Corporation
    Inventors: Jean-Francois Carle, Patrick Phillippot