Patents by Inventor Astrid Zuendorff

Astrid Zuendorff 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).

  • UV-light-absorbing quaternary polysiloxanes
    Patent number: 7776989
    Abstract: The invention relates to UV-light-absorbing quaternary polysiloxanes in which quaternary groups and UV-absorbing radicals can be mixed independently of one another according to the general formula (I)
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: August 17, 2010
    Assignee: Evonik Goldschmidt GmbH
    Inventors: Michael Ferenz, Burghard Gruening, Holger Leidreiter, Erika Messinger, Matthias Pascaly, Astrid Zuendorff
  • UV-light-absorbing quaternary polysiloxanes
    Publication number: 20060188456
    Abstract: The invention relates to UV-light-absorbing quaternary polysiloxanes in which quaternary groups and UV-absorbing radicals can be mixed independently of one another according to the general formula (I)
    Type: Application
    Filed: February 1, 2006
    Publication date: August 24, 2006
    Inventors: Michael Ferenz, Burghard Gruening, Holger Leidreiter, Erika Messinger, Matthias Pascaly, Astrid Zuendorff