Patents by Inventor Leo C. Rogers

Leo C. Rogers 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).

  • Manufacture of polycrystalline silicon
    Patent number: 4681652
    Abstract: Process of growing polysilicon on a plurality of deposition members grouped in a double ring, i.e., an outer circle surrounding an inner circle of members.
    Type: Grant
    Filed: June 5, 1980
    Date of Patent: July 21, 1987
    Inventors: Leo C. Rogers, Alfred J. Heitz