Patents by Inventor Michel Hamende

Michel Hamende 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 preparing (S) and (R)-2-[4-(4-chlorobenzhydryl)piperazin-1-yl]-ethoxyacetamide
    Patent number: 7199241
    Abstract: The present invention relates to a process for preparing (S)-2-[4-(4-chlorobenzhydryl)piperazin-1-yl]-ethoxyacetamide and (R)-2-[4-(4-chlorobenzhydryl)piperazin-1-yl]-ethoxyacetamide by separation of a racemic mixture using multiple column chromatography.
    Type: Grant
    Filed: October 17, 2005
    Date of Patent: April 3, 2007
    Assignee: UCB, S.A.
    Inventors: Vincent Zimmermann, Emile Cavoy, Michel Hamende
  • Process for preparing (S) and (R)—2-[4-(4-chlorobenzhydryl)piperazin-1-yl]-ethoxyacetamide
    Patent number: 6977301
    Abstract: The present invention relates to a process for preparing (S)-2-[4-(4-chlorobenzhydryl)piperazin-1-yl]-ethoxyacetamide and (R)-2-[4-(4-chlorobenzhydryl)piperazin-1-yl]-ethoxyacetamide by separation of a racemic mixture using multiple column chromatography.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: December 20, 2005
    Assignee: UCB, S.A.
    Inventors: Vincent Zimmerman, Emile Cavoy, Michel Hamende
  • Chromatography method and device with recovery of solvent
    Patent number: 6863824
    Abstract: A method and device for chromatographic separation producing at least two fractions are provided, in which: (i) the solvent is at least partially evaporated from the fractions produced; (ii) the solvent vapours thus produced are separated; stage (i) of the method being carried out, for at least one of the fractions, at least partially with the separated solvent vapours originating from one of the other evaporated fractions.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: March 8, 2005
    Assignee: Novasep
    Inventors: Michel Hamende, Marc Chatel, Laurent Rebier, Roger-Marc Nicoud
  • Chromatography method and device with recovery of solvent
    Publication number: 20030222024
    Abstract: A method and device for chromatographic separation producing at least two fractions are provided, in which: (i) the solvent is at least partially evaporated from the fractions produced; (ii) the solvent vapours thus produced are separated; stage (i) of the method being carried out, for at least one of the fractions, at least partially with the separated solvent vapours originating from one of the other evaporated fractions.
    Type: Application
    Filed: February 21, 2003
    Publication date: December 4, 2003
    Applicant: NOVASEP
    Inventors: Michel Hamende, Marc Chatel, Laurent Rebier, Roger Marc Nicoud
  • Process for separation in a simulated moving bed of at least one component in columns that have a suitable length to diameter ratio
    Patent number: 6533940
    Abstract: The invention relates to a process for separating at least one component of a mixture in a simulated moving bed, in which each of the chromatographic columns that contains an adsorbent has a ratio of L (length) to D (diameter) of between 0.01 and 0.34, and the ratio of LTOT (length in n columns) to D (diameter) is between 0.06 and 2.3. It is possible to apply an axial dynamic pressure on each of the upper columns that exceeds the pressure drop of all of the columns.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: March 18, 2003
    Assignee: Novasep
    Inventors: Sylvie Lehoucq, Olivier Ludemann-Hombourger, Roger-Marc Nicoud, Michel Hamende, Emile Cavoy
  • Process and device for separation in a simulated moving bed of at least one component in columns that have a suitable length to diameter ratio
    Publication number: 20020011445
    Abstract: The invention relates to a process and a device for separating at least one component of a mixture in a simulated moving bed, in which each of the chromatographic columns that contains an absorbent has a ratio of L (length) to D (diameter) of between 0.01 and 0.34.
    Type: Application
    Filed: June 28, 2001
    Publication date: January 31, 2002
    Applicant: NOVASEP SAS
    Inventors: Sylvie Lehoucq, Olivier Ludemann-Hombourger, Roger-Marc Nicoud, Michel Hamende, Emile Cavoy
  • Process for preparing (s)- and (R)-.alpha.-ethyl-2-oxo-1-pyrrolidineacetamide
    Patent number: 6124473
    Abstract: The present invention relates to a process for preparing (S)- and (R)-.alpha.-ethyl-2-oxo-1-pyrrolidineacetamide and (R)-.alpha.-ethyl-2-oxo-1-pyrrolidineacetamide. According to this process, the enantiomeric resolution of the racemic mixture of .alpha.-ethyl-2-oxo-1-pyrrolidineacetamide is carried out by simulated mobile bed chromatography, using at least three columns filled with chiral stationary phase.This process makes it possible to achieve good production efficiency on the industrial scale.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: September 26, 2000
    Assignee: UCB, S.A.
    Inventors: Emile Cavoy, Michel Hamende, Michel Deleers, Jean-Pierre Canvat, Vincent Zimmermann
  • Process for the preparation of levetiracetam
    Patent number: 6107492
    Abstract: Levetiracetam is prepared by optical resolution of etiracetam by means of preparative high performance liquid chromatography or continuous simulated moving bed chromatographic system using silica gel supporting amylose tris(3,5-dimethylphenylcarbamate) as a packing material.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: August 22, 2000
    Assignees: UCB, S.A., Daicel Chemical Industries, Ltd.
    Inventors: Tooru Futagawa, Jean-Pierre Canvat, Emile Cavoy, Michel Deleers, Michel Hamende, Vincent Zimmermann