Patents by Inventor Jean-Christophe Foundeur

Jean-Christophe Foundeur 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).

  • Method of determining the living character of an element carrying a fingerprint
    Patent number: 7657066
    Abstract: The present invention concerns a method of determining the living character of an element carrying a fingerprint. The method according to the invention is characterised in that it consists of making on the one hand at least one electrical measurement and on the other hand taking an image of the said fingerprint, and then validating the said or each electrical measurement by comparing it with the range of values of electrical measurements defined by a pre-established relationship linking the said range to characteristics of the said image.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: February 2, 2010
    Assignee: Sagem Securite
    Inventors: Jean-Christophe Foundeur, Laurent Lambert
  • Method of determining the living character of an element carrying a fingerprint
    Patent number: 7567690
    Abstract: The present invention concerns a method of determining the living character of an element carrying a fingerprint, consisting of making impedance measurements at various points on the said element by means of electrodes. The method according to the invention is characterised in that it consists of determining whether the said impedance measurements satisfy a law of variation of the impedance measured by the said electrodes as a function of the surface area of the said electrodes covered by the said elements such that Z=ƒDt(S).
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: July 28, 2009
    Assignee: Sagem Securite
    Inventors: Jean-Christophe Foundeur, Joel-Yann Fourre, Laurent Lambert
  • Method of dertermining the living character of an bearing carrying a fingerprint
    Publication number: 20060159314
    Abstract: The present invention concerns a method of determining the living character of an element carrying a fingerprint. The method according to the invention is characterised in that it consists of making on the one hand at least one electrical measurement and on the other hand taking an image of the said fingerprint, and then validating the said or each electrical measurement by comparing it with the range of values of electrical measurements defined by a pre-established relationship linking the said range to characteristics of the said image.
    Type: Application
    Filed: December 19, 2003
    Publication date: July 20, 2006
    Inventors: Jean-Christophe Foundeur, Laurent Lambert
  • Method of determining the living character of an element carrying a fingerprint
    Publication number: 20060140456
    Abstract: The present invention concerns a method of determining the living character of an element carrying a fingerprint, consisting of making impedance measurements at various points on the said element by means of electrodes. The method according to the invention is characterised in that it consists of determining whether the said impedance measurements satisfy a law of variation of the impedance measured by the said electrodes as a function of the surface area of the said electrodes covered by the said elements such that Z=ƒDt(S).
    Type: Application
    Filed: December 19, 2003
    Publication date: June 29, 2006
    Inventors: Jean-Christophe Foundeur, Joel-Yann Fourre, Laurent Lambert