Patents by Inventor Anatoli S. Boulaev

Anatoli S. Boulaev 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).

  • Material handling system for growing high-purity crystals
    Patent number: 5958133
    Abstract: A crystal-growing machine (10) includes a furnace chamber (12) and two loading chambers (14 and 16) that permit simultaneous processing operations. At least one of the two loading chambers (14 and 16) includes a lifting mechanism (36) for pulling a crystal (40) from a melt (20) in the furnace chamber (12). A positioning mechanism (60) disengages one of the loading chambers (14 and 16) from the furnace chamber (12) for cooling the crystal (40) in an evacuated environment and engages the other of the loading chambers (14 and 16) for simultaneously recharging the melt (20) or starting growth of another crystal.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: September 28, 1999
    Assignee: General Signal Corporation
    Inventor: Anatoli S. Boulaev
  • Temperature control system for growing high-purity monocrystals
    Patent number: 5746828
    Abstract: A crystal-pulling apparatus incorporates a temperature sensor and an adjustable radiation shield. The temperature sensor measures temperatures of a melt surface adjacent to a solidification interface between a crystal and the melt. The radiation shield regulates radiational cooling of the melt. A control system adjusts the radiation shield in response to changes in the measured temperature of the melt for enhancing dislocation-free growth of the crystal.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: May 5, 1998
    Assignee: General Signal Corporation
    Inventor: Anatoli S. Boulaev