Patents by Inventor Michael Preschel

Michael Preschel 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).

  • Patent number: 8895754
    Abstract: The invention relates to an improved process for the manufacture of novel benzotriazoles as well to novel benzotriazoles obtained by the novel process. This novel economical process provides products in high purity and yields.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: November 25, 2014
    Assignee: DSM IP Assets B.V.
    Inventors: Michael Preschel, Michael Roeder, Alexander Schlifke-Poschalko, Kesheng Zhang
  • Publication number: 20120302760
    Abstract: The invention relates to an improved process for the manufacture of novel benzotriazoles as well to novel benzotriazoles obtained by the novel process. This novel economical process provides products in high purity and yields.
    Type: Application
    Filed: January 13, 2011
    Publication date: November 29, 2012
    Inventors: Michael Preschel, Michael Roeder, Alexander Schlifke-Poschalko, Kesheng Zhang