Patents by Inventor Willy Richard Obyn

Willy Richard Obyn 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 manufacture of 2-keto-L-gulonic acid
    Patent number: 7091013
    Abstract: The present invention discloses a process for producing sodium 2-keto-L-gulonate from sorbitol and recovering 2-keto-L-gulonic acid in high recovery yields, by controlled cation exchange treatment of the micro-organism free fermentation broth and/or adjusting PII of said purified fermentation broth, followed by direct crystallisation of 2-keto-L-gulonic acid monohydrate.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: August 15, 2006
    Assignee: Cerestar Holding B.V.
    Inventors: Jean-Claude Marie-Pierre Ghislain De Troostembergh, Ignace André Debonne, Willy Richard Obyn, Catherine Gwenaëlle Michelle Peuzet
  • Process for the manufacture of 2-keto-l-gulonic acid
    Publication number: 20050019881
    Abstract: The present invention discloses a process for producing sodium 2-keto-L-gulonate from sorbitol and recovering 2-keto-L-gulonic acid in high recovery yields, by controlled cation exchange treatment of the micro-organism free fermentation broth and/or adjusting Ph of said purified fermentation broth, followed by direct crystallization of 2-keto-L-gulonic acid monohydrate.
    Type: Application
    Filed: August 2, 2002
    Publication date: January 27, 2005
    Inventors: Jean-Claude ,Marie-Pierre, Ghislain De Troostembergh, Ignace, Andre Debonne, Willy, Richard Obyn, Catherien, Gwenaelle, Michelle Peuzet
  • Process for producing and recovering erythritol from culture medium containing the same
    Publication number: 20020127667
    Abstract: The present invention discloses a process for producing erythritol by fermentation using a polysaccharide negative erythritol producing strain and recovering erythritol crystals by direct crystallisation from the unrefined micro-organism-free fermentation broth. Direct crystallisation of erythritol is performed at dry substance higher than 80% w/w. Recovery of erythritol crystals is at least 85% and purity of erythritol crystals is at least 99% w/w.
    Type: Application
    Filed: March 11, 2002
    Publication date: September 12, 2002
    Applicant: Cerestar B.V.
    Inventors: Jean-Claude Marie-Pierre Ghislain de Troostembergh, Ignace Andre Debonne, Willy Richard Obyn
  • Process for producing and recovering erythritol from culture medium containing the same
    Patent number: 6440712
    Abstract: The present invention discloses a process for producing erythritol by fermentation using a polysaccharide negative erythritol producing strain and recovering erythritol crystals by direct crystallization from the unrefined micro-organism-free fermentation broth. Direct crystallization of erythritol is performed at dry substance higher than 80% w/w. Recovery of erythritol crystals is at least 85% and purity of erythritol crystals is at least 99% w/w.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: August 27, 2002
    Assignee: Cerestar Holding B.V.
    Inventors: Jean-Claude Marie-Pierre Ghislain de Troostembergh, Ignace André Debonne, Willy Richard Obyn
  • Process for producing and recovering erythritol from culture medium containing the same
    Publication number: 20010049124
    Abstract: The present invention discloses a process for producing erythritol by fermentation using a polysaccharide negative erythritol producing strain and recovering erythritol crystals by direct crystallization from the unrefined micro-organism-free fermentation broth. Direct crystallization of erythritol is performed at dry substance higher than 80% w/w. Recovery of erythritol crystals is at least 85% and purity of erythritol crystals is at least 99% w/w.
    Type: Application
    Filed: December 8, 2000
    Publication date: December 6, 2001
    Inventors: Jean-Claude Marie-Pierre Ghislain de Troostembergh, Ignace Andre Debonne, Willy Richard Obyn