Patents by Inventor Nathalie Donat

Nathalie Donat 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).

  • Demodulation capacity of an electromagnetic transponder
    Patent number: 6859640
    Abstract: An electromagnetic transponder including an oscillating circuit adapted to extracting from a radiating field a high-frequency amplitude-modulated signal, circuitry for extracting from said high-frequency signal an approximately D.C. supply voltage, a demodulator of data carried by the high-frequency signal, and circuitry for separately regulating the supply voltage and a useful voltage carrying the data.
    Type: Grant
    Filed: January 2, 2002
    Date of Patent: February 22, 2005
    Assignee: STMicroelectronics S.A.
    Inventors: Michel Bardouillet, Nathalie Donat, Vineet Tiwart
  • Demodulation capacity of an electromagnetic transponder
    Publication number: 20020105376
    Abstract: An electromagnetic transponder including an oscillating circuit adapted to extracting from a radiating field a high-frequency amplitude-modulated signal, circuitry for extracting from said high-frequency signal an approximately D.C. supply voltage, a demodulator of data carried by the high-frequency signal, and circuitry for separately regulating the supply voltage and a useful voltage carrying the data.
    Type: Application
    Filed: January 2, 2002
    Publication date: August 8, 2002
    Applicant: STMicroelectronics S.A.
    Inventors: Michel Bardouillet, Nathalie Donat, Vineet Tiwart
  • Detector of radio frequency signals for contactless chip cards
    Patent number: 6152373
    Abstract: A contactless chip card includes a circuit for detecting the presence of radio frequency signals. A detector comprises at least one circuit for detecting the presence of radio signals by making direct use of the corresponding signals received by an antenna winding. In addition, a phase-shift detector detects the relative phase differences between signals provided by the antenna winding.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: November 28, 2000
    Assignee: STMicroelectronics S.A.
    Inventors: Andrew James Roberts, Frederic Subbiotto, Nathalie Donat