Patents by Inventor Hubert Leveque

Hubert Leveque 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: 7597804
    Abstract: This invention relates to optically active support materials which include one or more esters and/or one or more carbamates and/or one or more mixed ester and carbamate compounds of polysaccharide or oligosaccharide, and an organic and/or inorganic substrate.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: October 6, 2009
    Assignee: EKA Chemicals
    Inventors: Raphaël Duval, Hubert Leveque
  • Patent number: 7576034
    Abstract: The invention concerns a crosslinked optically active three-dimensional polymer network, consisting of homochiral units of a first selector and of homochiral units of at least a second selector of different structure from the first selector, the homochiral units of the first selector comprising at least three polymerisable or crosslinkable functional groups and the homochiral units of the second selector comprising at least two polymerisable or crosslinkable functional groups, the homochiral groups being chemically mutually bound. The invention also concerns a method for making such a polymer network and its uses.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: August 18, 2009
    Assignee: Eka Chemicals AB
    Inventors: Raphaël Duval, Hubert Leveque
  • Patent number: 7067640
    Abstract: The invention relates to a method which comprises synthesizing bifunctional compounds then chiral compounds from the bifunctional compounds, also to synthesizing supports comprising these chiral compounds, and the use of these supports for preparing or separating enantiomers, or for asymmetric synthesis. The invention also relates to bifunctional compounds, their use as a source of functionalized polymers, and to the chiral compounds, also to the use of these chiral compounds in a chiral support in the form of a three-dimensional network or for separating or preparing enantiomers, principally for analytical or preparative chromatography, and in a support for the production of chiral molecules by asymmetric synthesis.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: June 27, 2006
    Assignee: EKA Chemicals AB
    Inventors: Raphaël Duval, Hubert Leveque
  • Publication number: 20050209100
    Abstract: This invention relates to optically active support materials which include one or more esters and/or one or more carbamates and/or one or more mixed ester and carbamate compounds of polysaccharide or oligosaccharide, and an organic and/or inorganic substrate.
    Type: Application
    Filed: June 28, 2004
    Publication date: September 22, 2005
    Inventors: Raphael Duval, Hubert Leveque
  • Publication number: 20040260081
    Abstract: The invention concerns a crosslinked optically active three-dimensional polymer network, consisting of homochiral units of a first selector and of homochiral units of at least a second selector of different structure from the first selector, the homochiral units of the first selector comprising at least three polymerisable or crosslinkable functional groups and the homochiral units of the second selector comprising at least two polymerisable or crosslinkable functional groups, the homochiral groups being chemically mutually bound. The invention also concerns a method for making such a polymer network and its uses.
    Type: Application
    Filed: March 22, 2004
    Publication date: December 23, 2004
    Inventors: Raphael Duval, Hubert Leveque
  • Patent number: 6528642
    Abstract: Mono- and di-derivatives of cyclodextrins are completely defined, also a method for their synthesis and purification, functionalised cyclodextrins obtained from these derivatives, and the synthesis of supports comprising these cyclodextrin derivatives. Use of the supports for the preparation or separation of enantiomers, for asymmetric synthesis, for catalysis, for the preparation or separation of geometrical isomers or positional isomers, or for the preparation or separation of organic molecules with a hydrophobic nature is also described.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: March 4, 2003
    Assignees: Institut Francais du Petrole, Chiralsep S.A.R.L.
    Inventors: Raphaël Duval, Hubert Lévêque
  • Patent number: 6342592
    Abstract: The invention relates to a method which comprises synthesising bifunctional compounds then chiral compounds from the bifunctional compounds, also to synthesising supports comprising these chiral compounds, and the use of these supports for preparing or separating enantiomers, or for asymmetric synthesis. The invention also relates to bifunctional compounds, their use as a source of functionalised polymers, and to the chiral compounds, also to the use of these chiral compounds in a chiral support in the form of a three-dimensional network or for separating or preparing enantiomers, principally for analytical or preparative chromatography, and in a support for the production of chiral molecules by asymmetric synthesis.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: January 29, 2002
    Assignee: Institut Francais du Petrole and Chiralsep
    Inventors: Raphaël Duval, Hubert Leveque
  • Patent number: 6042723
    Abstract: Mono- and di-derivatives of cyclodextrins are completely defined, also a method for their synthesis and purification, functionalised cyclodextrins obtained from these derivatives, and the synthesis of supports comprising these cyclodextrin derivatives. Use of the supports for the preparation of separation of enantiomers, for asymmetric synthesis, for catalysis, for the preparation or separation of geometrical isomers or positional isomers, or for the preparation or separation of organic molecules with a hydrophobic nature is also described.
    Type: Grant
    Filed: August 7, 1998
    Date of Patent: March 28, 2000
    Assignees: Institut Francais de Petrole, Chiralsep S.A.R.L.
    Inventors: Raphael Duval, Hubert Leveque