Patents by Inventor Ton Rene Vries

Ton Rene Vries 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).

  • 3-oxopropane-1-sulphonic acids and sulphonates
    Patent number: 6639103
    Abstract: The invention relates to 1,3-disubstituted-3-oxopropane-1-sulfonic acids and sulfonates and enantiomerically inriched forms thereof. The invention further relates to the use of these enantiomerically inriched compounds to resolve mixtures of enantiomers, in particular mixtures of enantiomers of amino-functionalized compounds.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: October 28, 2003
    Assignee: DSM N.V.
    Inventors: Hans Wijnberg, Kees Pouwer, Jose Nieuwenhuijzen, Ton Rene Vries
  • Process for the production of semi synthetic statins via novel intermediates
    Patent number: 6294680
    Abstract: A process has been provided to produce semi synthetic statins, as for instance simvastatin with a high yield, for another statin, preferably a naturally occurring statin, as for instance lovastatin. Also a number of novel intermediate compounds, prepared during said process, has been provided.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: September 25, 2001
    Assignee: Plus Chemicals, B.V.
    Inventors: Ton Rene Vries, Hans Wijnberg, Wijnand Sjourd Faber, Venetka Ivanova Kalkman-Agayn, Mieke Ivanova Sibeyn