Patents by Inventor Michel Franco

Michel Franco 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 and system for increasing the lifespan of a plasma
    Patent number: 8742667
    Abstract: A method and a system for increasing the lifespan of a plasma obtained in the atmosphere. The method includes the following steps: emitting a femtosecond laser pulse, referred to as a first pulse, generating a column of plasma by the filamentation phenomenon, and emitting a second YAG laser pulse, focused by way of an axicon on a line in the plasma column, the energy of the photons of the second laser pulse being greater than the attachment energy of the electrons in the plasma to neutral molecules such as oxygen molecules. The duration of the second pulse is greater than the duration of the first pulse, and the delay between the two pulses is greater than one microsecond.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: June 3, 2014
    Assignees: Ecole Polytechnique, Ecole Nationale Superieure des Techniques Avancees, Centre National de la Recherche Scientifique
    Inventors: Andre Mysyrowicz, Michel Franco
  • METHOD AND SYSTEM FOR INCREASING THE LIFESPAN OF A PLASMA
    Publication number: 20110254448
    Abstract: A method and a system for increasing the lifespan of a plasma obtained in the atmosphere. The method includes the following steps: emitting a femtosecond laser pulse, referred to as a first pulse, generating a column of plasma by the filamentation phenomenon, and emitting a second YAG laser pulse, focused by way of an axicon on a line in the plasma column, the energy of the photons of the second laser pulse being greater than the attachment energy of the electrons in the plasma to neutral molecules such as oxygen molecules. The duration of the second pulse is greater than the duration of the first pulse, and the delay between the two pulses is greater than one microsecond.
    Type: Application
    Filed: November 6, 2009
    Publication date: October 20, 2011
    Applicants: ECOLE POLYTECHNIQUE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, ECOLE NATIONALE SUPERIEURE DES TECHNIQUES AVANCEES
    Inventors: Andre Mysyrowicz, Michel Franco