Patents by Inventor Isabelle Prevot-Halter

Isabelle Prevot-Halter 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 production of (?)-epigallocatechin gallate
    Patent number: 7312199
    Abstract: A process is provided for making (?)-epigallocatechin gallate (EGCG) by subjecting a green tea extract to chromatography on a macroporous polar resin, eluting EGCG from the resin with a polar elution solvent, optionally concentrating the eluate, optionally regenerating the resin by desorbing the remaining catechins, and optionally concentrating the desorbed catechins.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: December 25, 2007
    Assignee: DSM IP Assets B.V.
    Inventors: David Carl Burdick, Heinz Egger, Andrew George Gum, Ingo Koschinski, Elena Muelchi, Isabelle Prevot-Halter
  • Process for the production of (-)-epigallocatechin gallate
    Publication number: 20060069046
    Abstract: A process is provided for making (?)-epigallocatechin gallate (EGCG) by subjecting a green tea extract to chromatography on a macroporous polar resin, eluting EGCG from the resin with a polar elution solvent, optionally concentrating the eluate, optionally regenerating the resin by desorbing the remaining catechins, and optionally concentrating the desorbed catechins.
    Type: Application
    Filed: November 9, 2005
    Publication date: March 30, 2006
    Inventors: David Burdick, Heinz Egger, Andrew Gum, Ingo Koschinski, Elena Muelchi, Isabelle Prevot-Halter
  • Process for the production of (?)-epigallocatechin gallate
    Patent number: 7012149
    Abstract: A process is provided for making (?)-epigallocatechin gallate (EGCG) by subjecting a green tea extract to chromatography on a macroporous polar resin, eluting EGCG from the resin with a polar elution solvent, optionally concentrating the eluate, optionally regenerating the resin by desorbing the remaining catechins, and optionally concentrating the desorbed catechins.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: March 14, 2006
    Assignee: DSM IP Assets B.V.
    Inventors: David Carl Burdick, Heinz Egger, Andrew George Gum, Ingo Koschinski, Elena Muelchi, Isabelle Prevot-Halter
  • Process for the production of (-)-epigallocatechin gallate
    Publication number: 20030083270
    Abstract: A process is provided for making (-)-epigallocatechin gallate (EGCG) by subjecting a green tea extract to chromatography on a macroporous polar resin, eluting EGCG from the resin with a polar elution solvent, optionally concentrating the eluate, optionally regenerating the resin by desorbing the remaining catechins, and optionally concentrating the desorbed catechins.
    Type: Application
    Filed: September 18, 2002
    Publication date: May 1, 2003
    Applicant: ROCHE VITAMINS, INC.
    Inventors: David Carl Burdick, Heinz Egger, Andrew George Gum, Ingo Koschinski, Elena Muelchi, Isabelle Prevot-Halter