Patents by Inventor Daniel Dumay

Daniel Dumay 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).

  • Photoreceiver for frequency-modulated optical signals
    Patent number: 5404242
    Abstract: A photoreceiver for frequency-modulated optical signals. The photoreceiver is formed of a semiconductor laser of the FABRY-PEROT type, wherein one of the faces thereof which receives a frequency modulated light beam is given an antireflection treatment. The voltage at the laser terminals is also tapped. Such a device finds particular application to optical telecommunication systems.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: April 4, 1995
    Assignee: France Telcom, Etablissement Autonome de Droit Public
    Inventors: Mouhammad J. Chawki, Loic Le Guiner, Daniel Dumay