Patents by Inventor Joël Lemaire

Joël Lemaire 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).

  • Ion trap with longitudinal permanent magnet and mass spectrometer using same
    Patent number: 7573029
    Abstract: A vacuum magnetic ion trap includes an assembly forming a permanent magnet including at least two magnetized structures (30, 32) in the form of hollow cylinders, one convergent radial structure, magnetized along a convergent radial direction, and one divergent radial structure, magnetized along a divergent radial direction, the convergent and divergent radial magnetized structures (30, 32) being arranged along a common longitudinal axis (XX?) The trap also includes a sealed chamber (4) containing anion confinement cell (8) fixed between the at least two magnetized structures (30, 32) and including at least two trapping electrodes (10) connectable to a voltage generator (12).
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: August 11, 2009
    Assignees: Centre National de la Recherche Scientifique, Universite Pierre et Marie Curie-Paris VI, Universite de Paris 11 - Paris Sud
    Inventors: Michel Heninger, Joël Lemaire, Gérard Mauclaire, Pierre Boissel
  • Ion Trap with longitudinal Permanent Magnet and Mass Spectrometer Using Same
    Publication number: 20080296494
    Abstract: The invention concerns a vacuum magnetic ion trap comprising an assembly forming a permanent magnet including at least two magnetized structures (30, 32) in the form of hollow cylinders, one convergent radial structure, magnetized along a convergent radial direction, and one divergent radial structure, magnetized along a divergent radial direction, said convergent and divergent radial magnetized structures (30, 32) being arranged along a common longitudinal axis (XX?). Said trap also comprises a sealed chamber (4) containing an ion confinement cell (8) fixed between said at least two magnetized structures (30, 32) and including at least two trapping electrodes (10) connectable to a voltage generator (12).
    Type: Application
    Filed: August 2, 2005
    Publication date: December 4, 2008
    Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S), UNIVERSITE PIERRE ET MARIE CURIE-PARIS VI TOUR CENTRALE, UNIVERSITE DE PARIS II PARIS SUD
    Inventors: Michel Heninger, Joel Lemaire, Gerard Mauclaire, Pierre Boissel
  • Permanent magnet ion trap and a mass spectrometer using such a magnet
    Patent number: 6989533
    Abstract: A vacuum ion trap includes a gastight processing enclosure and a permanent magnet defining a cavity and creating a directed magnetic field in the cavity, the enclosure being disposed inside the cavity and containing a confinement cell having at least two mutually parallel trapping electrodes perpendicular to the directed magnetic field, the trapping electrodes being connectable to a voltage generator. The trap includes at least one permanent magnet in the form of a hollow cylinder and structured with a Halbach cylinder type structure so as to generate the permanent magnetic field directed perpendicularly to the longitudinal axis of the cavity of the magnet. The trap is applicable in particular to Fourier transform mass spectrometry (FTICR).
    Type: Grant
    Filed: January 7, 2003
    Date of Patent: January 24, 2006
    Assignee: Centre National de la Recherche Scientifique (C.N.R.S.)
    Inventors: Gérard Bellec, Pierre Boissel, Michel Heninger, Joël Lemaire, Gérard Mauclaire
  • Permanent magnet ion trap and a mass spectrometer using such a magnet
    Publication number: 20050092919
    Abstract: A vacuum ion trap includes a gastight processing enclosure and a permanent magnet defining a cavity and creating a directed magnetic field in the cavity, the enclosure being disposed inside the cavity and containing a confinement cell having at least two mutually parallel trapping electrodes perpendicular to the directed magnetic field, the trapping electrodes being connectable to a voltage generator. The trap includes at least one permanent magnet in the form of a hollow cylinder and structured with a Halbach cylinder type structure so as to generate the permanent magnetic field directed perpendicularly to the longitudinal axis of the cavity of the magnet. The trap is applicable in particular to Fourier transform mass spectrometry (FTICR).
    Type: Application
    Filed: January 7, 2003
    Publication date: May 5, 2005
    Applicant: Centre National De La Recherche Scientifique (C.N.R.S.)
    Inventors: Gerard Bellec, Pierre Boissel, Michel Heninger, Joel Lemaire, Gerard Mauclaire