Patents by Inventor Claude Tondu

Claude Tondu 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 laser source with stamped support
    Patent number: 4411057
    Abstract: The invention relates to laser sources using a semiconductor chip from which the radiation is collected by an optical fiber. In accordance with the invention there is provided a laser source in which the support for the semiconductor chip and the optical fiber is metallic. The support is stamped with an impression comprising a seat for the semiconductor chip and at least one groove for accommodating the optical fiber. The invention is applicable to radiation sources used in optical telecommunication systems.
    Type: Grant
    Filed: October 20, 1981
    Date of Patent: October 25, 1983
    Assignee: Thomson-CSF
    Inventors: Eugene Duda, Claude Tondu, Alain Maumy
  • System for soldering a semiconductor laser to a metal base
    Patent number: 4321617
    Abstract: A GaAs diode and a copper base are joined together so as to form a soldered system comprising an indium layer inserted between two tungsten layers which serve as a barrier for preventing indium diffusion. A thin gold or platinum wetting layer is applied to the tungsten layers to aid in adherence of the solder to the tungsten without the impairment of the indium during soldering operations due to alloying. The invention is applicable to optical-fiber telecommunication systems.
    Type: Grant
    Filed: July 19, 1979
    Date of Patent: March 23, 1982
    Assignee: Thomson-CSF
    Inventors: Eugene Duda, Alain Maumy, Claude Tondu