Patents by Inventor Laurent Blain

Laurent Blain 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).

  • Ring network for transmitting wavelength-multiplexed informations
    Patent number: 5760934
    Abstract: This ring network for wavelength-multiplexed information transmission. comprises two optical fibres (F1, F2) passing through nodes (N1 to N4) of the network and traversed in the opposite direction by informations, electronic add-drop multiplexers (ME1 to ME4) or ADM, each ADM supplying information to other ADM's, of the network at given wavelengths and optical add-drop multiplexers (M01 to M04) or OADM, each OADM adding to the fibres the informations from the associated ADM and extracting from said fibres the informations intended for said ADM. Application to optical telecommunications.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: June 2, 1998
    Assignee: France Telecom
    Inventors: Alain Sutter, Andre Hamel, Laurent Blain