Patents by Inventor Reiner Gottschalk

Reiner Gottschalk 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).

  • Triazinyl flavonate brighteners
    Publication number: 20090227712
    Abstract: The invention relates to compounds of formula (I) wherein R1, R2, R3 and R4 independently represent OR3 or NR6R7; R5, R6 and R7 independently represent hydrogen, substituted or unsubstituted alkyl, especially C1-C4 alkyl, or substituted or unsubstituted aryl, especially C6-C10 aryl; R6, R7 can also form an aliphatic or aromatic ring, together with the N atom to which they are bonded and optionally other heteroatoms; M represents hydrogen, an equivalent of a monovalent or bivalent metal ion, especially from the group of alkali metals or alkaline earth metals, or of an optionally organically substituted ammonium ion; and B1 represents a bivalent binding link.
    Type: Application
    Filed: June 15, 2005
    Publication date: September 10, 2009
    Inventors: Heinz Giesecke, Reiner Gottschalk, Bernhard Hunke, Dirk Pfuetzenreuter
  • Use of brighteners for the preparation of coating slips
    Patent number: 7258815
    Abstract: The use of optical brighteners of the formula (II): in which Y denotes a radical of the formula and the other substituents have the meaning stated in the description, for brightening aqueous coating slips comprising at least one latex binder and at least one synthetic co-binder differing therefrom.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: August 21, 2007
    Inventors: Karl-Heinz Drenker, Heinz Giesecke, Bernhard Hunke, Bernd Hauschel, Reiner Gottschalk, Claudia Hundertmark
  • Use of brighteners for the preparation of coating slips
    Publication number: 20030236326
    Abstract: The use of optical brighteners of the formula (II): 1
    Type: Application
    Filed: April 16, 2003
    Publication date: December 25, 2003
    Inventors: Karl-Heinz Drenker, Heinz Giesecke, Bernhard Hunke, Bernd Hauschel, Reiner Gottschalk, Claudia Hundertmark
  • Use of aqueous brightener preparations for brightening natural and synthetic materials
    Publication number: 20030089888
    Abstract: The invention relates to a method of optically brightening natural or synthetic materials with aqueous brightener preparations containing
    Type: Application
    Filed: September 20, 2002
    Publication date: May 15, 2003
    Inventors: Erwin Bacher, Rolf Brockmann, Heinz Giesecke, Reiner Gottschalk, Peter-Roger Nyssen