Patents by Inventor Eduard Vreysen

Eduard Vreysen 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).

  • Preparation Of 9-Hydroxy -(2-Hydroxyethyl)-2-Methyl-4H-Pyrido[1,2-A]Pryimidin-4-One
    Publication number: 20070260061
    Abstract: The present invention concerns a process for preparing crystalline 3-(2-chloro-ethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one substantially free of 2-acetylbutyrolactone.
    Type: Application
    Filed: September 7, 2005
    Publication date: November 8, 2007
    Applicant: Janssen Pharmaceutica N.V.
    Inventors: Eduard Vreysen, Joannes Van Dun, Wim Aelterman