Patents by Inventor Laurent Denu

Laurent Denu 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).

  • Method for the determination of 25-hydroxycholecalciferol in feed
    Patent number: 7358092
    Abstract: A method for quantitative determination of 25-hydroxycholecalciferol in feed is described. The method includes the steps of adding a defined amount of an internal standard which has a mass different from 25-hydroxycholecalciferol and a polarity similar to that compound, e.g., 26,27-hexadeutero-25-hydroxycholecalciferol, to an aqueous dispersion of the feed, extracting the aqueous dispersion with tert.butyl methyl ether and further processing the extract by HPLC and mass spectrometry as described in the specification.
    Type: Grant
    Filed: November 26, 2004
    Date of Patent: April 15, 2008
    Assignee: DSM IP Assets B.V.
    Inventors: Laurent Denu, Richard Goessl, Peter Hofmann
  • Method for the determination of 25-hydroxycholecalciferol in feed
    Publication number: 20070117209
    Abstract: A method for quantitative determination of 25-hydroxycholecalciferol in feed is described. The method comprises the steps of adding a defined amount of an internal standard which has a mass different from 25-hydroxycholecalciferol and a polarity similar to that compound, e.g., 26,27-hexadeutero-25-hydroxycholecalciferol, to an aqueous dispersion of the feed, extracting the aqueous dispersion with tert.butyl methyl ether and further processing the extract by HPLC and mass spectrometry as described in the specification.
    Type: Application
    Filed: November 26, 2004
    Publication date: May 24, 2007
    Applicant: DSM IP ASSETS B.V.
    Inventors: Laurent Denu, Richard Goessl, Peter Hofmann