Patents by Inventor Ted E. Schroeder

Ted E. Schroeder 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).

  • Method of growing gallium arsenide crystals using boron oxide encapsulant
    Patent number: 4585511
    Abstract: Gallium arsenide single crystals are grown under an encapsulant of boron oxide which contains a predetermined amount of water in the range of 200 to 1000 ppm. The GaAs crystals so produced are stable in that the resistivity of the GaAs upon heat treatment remains substantially constant. The GaAs single crystals as produced may be subjected to a bulk anneal to further improve the stability.
    Type: Grant
    Filed: July 22, 1983
    Date of Patent: April 29, 1986
    Assignee: Cominco Ltd.
    Inventors: Roelof P. Bult, Ted E. Schroeder, James G. Needham