Patents by Inventor Werner Theuer

Werner Theuer 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).

  • New polyisocyanate-polyaddition compounds, a process for their preparation and their use for the dispersion of solids
    Patent number: 4929705
    Abstract: New polyisocyanate-polyaddition compounds, a process for their preparation and their use as wetting or dispersing agents for the incorporation of solids, in particular pigments, in lacquer or synthetic resin formulation.
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: May 29, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jan Mazanek, Ulrich von Gizycki, Hanns P. Muller, Martin Wienkenhover, Karl-Heinz Wieser, Volker Paulat, Werner Theuer, Walter Muller
  • Concentrated solutions of anionic dyestuffs
    Patent number: 3995997
    Abstract: Anionic dyestuffs which contain as the cation at least one cation of the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 denote alkyl with 1-6 C-atoms, cycloalkyl with 5-7 C-atoms or aralkyl with 7-12 C-atoms or represent a group ##STR2## wherein R.sub.4 and R.sub.5 denote hydrogen, methyl or ethyl andn represents the numbers 1-20Are suitable for the preparation of storage-stable, water-miscible, concentrated solutions.
    Type: Grant
    Filed: August 8, 1974
    Date of Patent: December 7, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Guenther Boehmke, Werner Theuer, Konrad Nonn, Georg Pape