Patents by Inventor Pierre Friez

Pierre Friez 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).

  • Integrated single-mode isolator waveguide and application to a semiconductor laser
    Patent number: 5015051
    Abstract: Integrated single-mode isolator waveguide having a heating means (3) making it possible to increase the efficiency of the isolator (1). The invention also provides for an intermediate layer (5) located between the guide layer (1) and the substrate (2). Application: coupling of laser diodes to operation circuits.
    Type: Grant
    Filed: December 7, 1988
    Date of Patent: May 14, 1991
    Assignees: Thomson-CSF, L'Etat Francais
    Inventors: Jean-Paul Castera, Paul-Louis Meunier, Alain Carenco, Jean-Marie Dupont, Pierre Friez