Patents by Inventor Andre Lieutier

Andre Lieutier 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).

  • Patent number: 8280698
    Abstract: The present invention relates to a computer-implemented method of computing. In one embodiment, computing a boundary of a modelled object in a computer aided design system, the method may include accessing data defining a modeled object as a simplicial m-complex. The method may further include projecting the simplicial m -complex in n, m?n. The method also may include computing a polyhedral boundary of the modeled object as a polyhedral n?1-cycle in the projection of the simplicial complex. The polyhedral n?1-cycle may substantially border the projection of the simplicial complex. The present invention is further directed to a computer program product and a computerized system for performing the method of the invention.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: October 2, 2012
    Assignee: Dassauit Systèmes
    Inventors: Nicolas Montana, Frédéric Chazal, André Lieutier
  • Publication number: 20110295564
    Abstract: The invention is directed to a computer-implemented process, in a computer-aided geometric design system, for computing a resulting closed triangulated polyhedral surface from a first and a second modeled objects. The first modeled object is modeled by a first closed triangulated polyhedral surface and the second modeled object is modeled by a second closed triangulated polyhedral surface.
    Type: Application
    Filed: May 19, 2011
    Publication date: December 1, 2011
    Applicant: DASSAULT SYSTEMES
    Inventors: Frederic Chazal, Andre Lieutier, Nicolas Montana
  • Publication number: 20100121626
    Abstract: The invention relates to a computer-implemented method of computing, in a computer aided design system, of a boundary of a modeled object, the method comprising: accessing data defining a modeled object as a simplicial m-complex; projecting the simplicial m-complex in n, m?n; computing a polyhedral boundary of said modeled object as a polyhedral n?1-cycle in the projection of the simplicial complex, the polyhedral n?1-cycle substantially bordering the projection of the simplicial complex. The present invention is further directed to a computer program product and a computerized system comprising means for taking steps of the method of the invention.
    Type: Application
    Filed: October 30, 2009
    Publication date: May 13, 2010
    Applicant: DASSAULT SYSTEMES
    Inventors: Nicolas Montana, Frédéric Chazal, André Lieutier
  • Patent number: 6281905
    Abstract: For modifying a zone of a surface having an original shape, outer constraints are defined at boundaries of the zone as continuities Gk along at least part thereof. Inner constraints Gn are defined as points or curves to be crossed by the zone when modified. An amount of deformation is defined in each point of the zone as a result of a resilient deformation of a generalized infinite thin planar plate in equilibrium, respecting the outer and inner constraints. The modified zone is generated as a surface resulting from a result of an application of the resilient deformation to the original shape in the zone and connected to the unmodified portion of the surface.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: August 28, 2001
    Assignee: Matra Datavision
    Inventors: Alain Massabo, André Lieutier, Gérard Durand, Jacques Goussard