Patents by Inventor Robert A. Ruehrwein

Robert A. Ruehrwein 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).

  • Process for production of III-V compound crystals
    Patent number: 4010045
    Abstract: A method of forming and epitaxially depositing III-V compound crystals which comprises interacting two gaseous mixtures in the absence of oxidizing gas and hydrogen carrier gas, one mixture being formed by contacting a stream of an inert carrier gas with a gaseous trihalide of a Group III element and thereafter contacting that mixture with the same Group III element, the second mixture being formed by contacting a stream of an inert carrier gas with a Group V element or a volatile Group V compound.
    Type: Grant
    Filed: April 27, 1976
    Date of Patent: March 1, 1977
    Inventor: Robert A. Ruehrwein
  • Process for production of III-V compound epitaxial crystals
    Patent number: 3975218
    Abstract: A method of forming and epitaxially depositing III-V compound crystals which comprises interacting two gaseous mixtures in the absence of oxidizing gas and hydrogen carrier gas, one mixture being formed by contacting a stream of an inert carrier gas with a gaseous trihalide of a Group III element and thereafter contacting that mixture with the same Group III element, the second mixture being formed by contacting a stream of an inert carrier gas with a Group V element or a volatile Group V compound.
    Type: Grant
    Filed: December 13, 1973
    Date of Patent: August 17, 1976
    Assignee: Semimetals, Inc.
    Inventor: Robert A. Ruehrwein