Patents by Inventor Frédéric Boisivon

Frédéric Boisivon 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 separating the diastereomers of RSS-and SSS-N- ? [1-carboxy-3-phenylpropyl] lysylproline
    Patent number: 8119817
    Abstract: A process for separating the diastereomers of RSS— and SSS—N-?[1-carboxy-3-phenylpropyl]lysylproline is described. Previous chromatographic processes for separating the diastereomers of this peptide active substance, such as for example adsorption chromatography, exhibited disadvantages with regard to the solvents used and throughput. These disadvantages do not occur if basic ion exchangers are used in the chromatographic separation of the diastereomers. In particular, purely aqueous solutions may be used as the eluent.
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: February 21, 2012
    Assignee: Degussa-Huels AG
    Inventors: Frédéric Boisivon, Jean Debas, Gérard Richet
  • Process for separating the diastereomers of RSS-snd SSS-N- a [1-carboxy -3-Phenylpropyl] lysylproline
    Publication number: 20110077412
    Abstract: A process for separating the diastereomers of RSS— and SSS—N-?[1-carboxy-3-phenylpropyl]lysylproline is described. Previous chromatographic processes for separating the diastereomers of this peptide active substance, such as for example adsorption chromatography, exhibited disadvantages with regard to the solvents used and throughput. These disadvantages do not occur if basic ion exchangers are used in the chromatographic separation of the diastereomers. In particular, purely aqueous solutions may be used as the eluent.
    Type: Application
    Filed: September 29, 2009
    Publication date: March 31, 2011
    Inventors: Frédéric Boisivon, Jean Debas, Gérard Richet