Patents by Inventor Christian Picherit

Christian Picherit 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).

  • Preparation of crystalline ezatiostat hydrochloride ansolvate form D
    Patent number: 8841476
    Abstract: Provided herein are processes of preparing ezatiostat hydrochloride, and crystalline ezatiostat hydrochloride ansolvate form D.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: September 23, 2014
    Assignee: Telik, Inc.
    Inventors: Guyselaine Leclerc, Hervé Lhermitte, Christian Picherit
  • PREPARATION OF CRYSTALLINE EZATIOSTAT HYDROCHLORIDE ANSOLVATE FORM D
    Publication number: 20110301376
    Abstract: Provided herein are processes of preparing ezatiostat hydrochloride, and crystalline ezatiostat hydrochloride ansolvate form D.
    Type: Application
    Filed: April 26, 2011
    Publication date: December 8, 2011
    Inventors: Guyselaine LECLERC, Hervé LHERMITTE, Christian PICHERIT
  • Process for preparing hexahydropyridazine-3-carboxylic acid derivatives
    Patent number: 7132535
    Abstract: According to the process of the invention, the hexahydropyridazine-3-carboxylic acid derivatives are prepared by reacting a compound of formula (II) with a compound of formula (III) in the presence of a base with a pK of greater than or equal to 8.5, in a ketone organic solvent, to obtain an intermediate compound that is not isolated and that is treated with a basic aqueous medium. By means of this process, the derivatives are obtained more quickly and more economically.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: November 7, 2006
    Assignee: Isochem
    Inventors: Hervé Lhermitte, Charles-Henri Vincent, Christian Picherit
  • Process for preparing hexahydropyridazine-3-carboxylic acid derivatives
    Publication number: 20040210053
    Abstract: According to the process of the invention, the hexahydropyridazine-3-carboxylic acid derivatives are prepared by reacting a compound of formula (II) 1
    Type: Application
    Filed: April 15, 2004
    Publication date: October 21, 2004
    Inventors: Herve Lhermitte, Charles-Henri Vincent, Christian Picherit