Patents by Inventor Anne Marie Vitrant

Anne Marie Vitrant 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).

  • Process for the preparation of ?benzyl esters of amino diacids and of alkanesulphonates of these esters, and these alkanesulphonates
    Patent number: 7078564
    Abstract: The invention relates to a process for the preparation of an ?-benzyl ester of an amino diacid, characterized in that the amino diacid is reacted with a benzyl alcohol derivative of formula (I) in which the R1 substituent or substituents, which are identical or different, represent a hydrogen atom, a C1 to C4 alkyl group, a C1 to C4 alkoxy group or a halogen atom and n is equal to 1, 2 or 3, in the presence of at least one mol per mole of the amino diacid of an alkanesulphonic acid, optionally in the presence of a solvent. The intermediate alkanesulphonates of the ?-benzyl esters of amino diacids and the ?-benzyl esters of amino diacids are obtained with a good yield and an excellent purity by virtue of this process.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: July 18, 2006
    Assignee: Isochem
    Inventors: Anne Marie Vitrant, Laurence Ferruccio, Charles-Henry Vincent
  • Process for the preparation of omega-benzyl esters of amino diacids and of alkanesulphonates of these esters, and these alkanesulphonates
    Publication number: 20040133033
    Abstract: The invention relates to a process for the preparation of an &ohgr;-benzyl ester of an amino diacid, characterized in that the amino diacid is reacted with a benzyl alcohol derivative of formula (I) 1
    Type: Application
    Filed: December 17, 2003
    Publication date: July 8, 2004
    Inventors: Anne Marie Vitrant, Laurence Ferruccio, Charles-Henry Vincent