Patents by Inventor David W. Clary

David W. Clary 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).

  • Silicon coating process
    Patent number: 5405658
    Abstract: This invention relates to an improved process for the thermal dehydrogenation of polysilicon granules in a fluidized bed reactor, the improvement which comprises introducing a varying electromagnetic field into the reactor whereby reactor walls are coated with silicon during the dehydrogenation.
    Type: Grant
    Filed: October 20, 1992
    Date of Patent: April 11, 1995
    Assignee: Albemarle Corporation
    Inventors: Jameel Ibrahim, Robert E. Farritor, David W. Clary
  • Device for the magnetic inductive heating of vessels
    Patent number: 5260538
    Abstract: The inductive heating of a reactor vessel by an external electromagnetic heating source is made more uniform by placing a susceptor between the heating source and the reactor vessel. In preferred embodiments, the reactor vessel is a fluidized bed vessel made of graphite and suitable for the preparation or treatment of polysilicon particles, and the susceptor is also made of graphite.
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: November 9, 1993
    Assignee: Ethyl Corporation
    Inventors: David W. Clary, Andrew O. Wikman