Patents by Inventor Jean Bernard Ranger

Jean Bernard Ranger 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).

  • Ohmic contacts to thin film circuits
    Patent number: 4025404
    Abstract: A process for establishing gold contact studs on thin film circuits consists in localized sublayer deposition of a platinum-gold alloy followed by subsequent electrolytic gold thickening of the studs. The studs so produced are particularly fit for thermocompression interconnection.
    Type: Grant
    Filed: November 4, 1975
    Date of Patent: May 24, 1977
    Assignee: Societe Lignes Telegraphiques et Telephoniques
    Inventors: Jean Joly, Jean Bernard Ranger