Patents by Inventor Richard Jan Baptist Henrikus Nouel Van den Berg

Richard Jan Baptist Henrikus Nouel Van den Berg 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 synthesis of sphingosine
    Patent number: 6852892
    Abstract: This invention relates to a method for the production of a sphingoid base according to formula comprising the steps of (1) dissolving a starting compound according to formula III or a salt thereof in a substantially inert solvent, (2) protecting the NH2 group with a NH2 protecting group, (3) activating the C-4 HR3 group for an elimination reaction with the C-5 HR4 group, (4) causing an elimination reaction to take place to form a double bond between the C-4 and C-5 carbon atom, and (5) removing the NH2 protecting group.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: February 8, 2005
    Assignee: Goldschmidt AG
    Inventors: Jacobus Hubertus Van Boom, Richard Jan Baptist Henrikus Nouel Van den Berg