Patents by Inventor Philippe Berthault

Philippe Berthault 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).

  • Cutoff transmission and or reception antenna
    Publication number: 20060050008
    Abstract: An electromagnetic wave transmission and/or reception antenna (10) which includes a flat spiral wire, the spiral having at least two turns; the antenna including at least one cut (12) for the purpose of reducing the inter-turn capacitance. Such an antenna is used in a contactless communication system in which the reader transmits electromagnetic signals to a portable object (card or ticket) in order to identify the holder of the portable object when the latter transmits return identification signals to the reader.
    Type: Application
    Filed: October 11, 2001
    Publication date: March 9, 2006
    Inventors: Sebastien Morand, Philippe Berthault