Patents by Inventor Werner Sindermann

Werner Sindermann 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).

  • Monoazo pigment preparations based on C.I. Pigment Yellow 74
    Patent number: 7419541
    Abstract: A pigment preparation comprising C.I. Pigment Yellow 74 of formula (I) as base pigment and C.I. Pigment Yellow 62 of formula (II) as pigment dispersant.
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: September 2, 2008
    Assignee: lariant Produkte (Deutschland) GmbH
    Inventors: Felix W. Grimm, Bernd Nestler, Joerg Schueller, Wojciech Nieradzik, Werner Sindermann, Joachim Weber, Ruediger Jung
  • Monoazo pigment preparations based on c.i. pigment yellow 74
    Publication number: 20070128532
    Abstract: The invention relates to a pigment preparation containing CI pigment yellow 74 according to formula (I) as a basic pigment and CI pigment yellow 62 according to formula (II) as a pigment dispersing agent.
    Type: Application
    Filed: December 8, 2004
    Publication date: June 7, 2007
    Inventors: Felix Grimm, Bernd Nestler, Joerg Schueller, Wojciech Nieradzik, Werner Sindermann, Joachim Weber, Ruediger Jung