Patents by Inventor Michel Kleinhans

Michel Kleinhans 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 manufacturing a single crystal of a III-V compound
    Patent number: 4528062
    Abstract: A method of manufacturing a single crystal of a III-V compound by melting a charge of polycrystalline material and progressive crystallization of the molten stoichiometric compound in a closed space.The method is characterized in that on the one hand a certain quantity of the sparingly volatile element of the compound is added to the charge of polycrystalline material, which facilitates the melting of the material and on the other hand the corresponding quantity of the volatile element is added at the point of lower temperature of the space so that the stoichiometric ratios are observed.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: July 9, 1985
    Assignee: U.S. Philips Corporation
    Inventors: Michel Kleinhans, Michel Gaffre