Patents by Inventor Jürgen Kühlwein

Jürgen Kühlwein 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).

  • DYES FOR POLYMER COLORATION, THEIR PREPARATION AND THEIR USE
    Publication number: 20120174324
    Abstract: The present invention relates to a dye of formula (I) where R1, R2, X, Y and t are each as defined in claim 1, to its preparation and to its use.
    Type: Application
    Filed: April 15, 2010
    Publication date: July 12, 2012
    Applicant: DYSTAR COLOURS DEUTSCHLAND GMBH
    Inventors: Roxana Barbieru, Werner Russ, Jürgen Kühlwein, Carsten Harfmann