Patents by Inventor Berhard Chabaud

Berhard Chabaud 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).

  • Monomethylation of nitrogeneous heterocycles
    Patent number: 7022845
    Abstract: A process for the monomethylation of nitrogenous heterocycles having at least one nitrogen atom bonded to a hydrogen atom by reacting the nitrogenous heterocycle with dimethyl carbonate at a temperature of between 100° and 200° C. and a pressure of between 0.93×105 Pa and 1.07×105 Pa while methanol produced during the reaction is distilled off as it is formed.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: April 4, 2006
    Assignee: Group SNPE
    Inventors: Elisabeth Borredon, Berhard Chabaud, Antoine Gaset, Sophie Thiebaud-Roux, Samedy Ouk
  • Monomethylation of nitrogeneous heterocycles
    Publication number: 20040024205
    Abstract: A process for the monomethylation of nitrogenous heterocycles having at least one nitrogen atom bonded to a hydrogen atom by reacting the nitrogenous heterocycle with dimethyl carbonate at a temperature of between 100° and 200° C. and a pressure of between 0.93×105 Pa and 1.07×105 Pa while methanol produced during the reaction is distilled off as it is formed.
    Type: Application
    Filed: July 31, 2003
    Publication date: February 5, 2004
    Inventors: Elisabeth Borredon, Berhard Chabaud, Antoine Gaset, Sophie Thiebaud-Roux, Samedy Ouk