Patents by Inventor Edward M. Yee

Edward M. Yee 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).

  • Patent number: 4615294
    Abstract: An apparatus for photochemical vapor deposition includes an outer reactor shell and a concentric inner shell which define a photochemical reaction zone. A radiation source is centrally located within the transparent inner shell, which isolates the radiation source from the vapor phase reactants present in the reaction zone. A rotating gas manifold is located within the reaction zone to uniformly distribute the vapor phase reactants within the reaction zone. Protective liquid is continually applied to the outer surface of the inner shell and spread into a thin film by wiper blades, to prevent deposition of reaction products onto the outer wall of the inner shell. The central location of the radiation source, along with the protective liquid film, make optimum usage of the reaction-inducing radiation generated by the radiation source. In addition, the rotating gas manifold promotes uniform deposition of layers of selected materials on substrates placed within the reaction zone.
    Type: Grant
    Filed: July 31, 1984
    Date of Patent: October 7, 1986
    Assignee: Hughes Aircraft Company
    Inventors: Robert Y. Scapple, John W. Peters, Jacques F. Linder, Edward M. Yee
  • Patent number: 4597986
    Abstract: An apparatus for photochemical vapor deposition includes an outer reactor shell and a concentric inner shell which define a photochemical reaction zone. A radiation source is centrally located within the transparent inner shell, which isolates the radiation source from the vapor phase reactants present in the reaction zone. A rotating gas manifold is located within the reaction zone to uniformly distribute the vapor phase reactants within the reaction zone. Protective liquid is continually applied to the outer surface of the inner shell and spread into a thin film by wiper blades, to prevent deposition of reaction products onto the outer wall of the inner shell. The central location of the radiation source, along with the protective liquid film, make optimum usage of the reaction-inducing radiation generated by the radiation source. In addition, the rotating gas manifold promotes uniform deposition of layers of selected materials on substrates placed within the reaction zone.
    Type: Grant
    Filed: August 12, 1985
    Date of Patent: July 1, 1986
    Assignee: Hughes Aircraft Company
    Inventors: Robert Y. Scapple, John W. Peters, Jacques F. Linder, Edward M. Yee
  • Patent number: 4286373
    Abstract: A method of making transmission mode glass-sealed negative electron affinity (NEA) gallium arsenide (GaAs) photocathodes, utilizing germanium (Ge) as the seed crystal and multilayers of GaAs and gallium aluminum arsenide (GaAlAs) grown by metal alkyl-hydride vapor-phase epitaxy. The GaAs serves as the photoemitting layer and the GaAlAs serves as the passivating layer. The Ge, GaAs,GaAlAs combination is sealed to a glass support substrate which serves as the input window for the device. Finally, the Ge is removed and the GaAs is activated.
    Type: Grant
    Filed: January 8, 1980
    Date of Patent: September 1, 1981
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: William A. Gutierrez, Herbert L. Wilson, Edward M. Yee
  • Patent number: 4008106
    Abstract: A method of fabricating high performance transmission mode negative elect affinity III-V compound photocathodes which eliminates recurrent liquid phase epitaxial growth surface defects and solves the "wipe-off" problem incurred during the termination of the growth cycle.
    Type: Grant
    Filed: November 13, 1975
    Date of Patent: February 15, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: William A. Gutierrez, Herbert L. Wilson, Edward M. Yee