Patents by Inventor Karl-Heinz Drenker

Karl-Heinz Drenker 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).

  • Method for marking sites
    Patent number: 7309862
    Abstract: A method for determining changes of a site, wherein the site is treated with an aqueous dispersion having at least one binder, at least one substance emitting visible light on UV exposure, at least one binder and, optionally, a dispersant and the site thus treated and/or untreated adjacent sites are exposed to UV light and the deviation of the light intensity of the emitted light of a partial area of the site from the mean light intensity of the emitted light of the site area and/or the light intensity of the emitted light of a part of the adjacent, untreated area from the mean light intensity of the emitted light of the adjacent untreated areas and/or the light intensity of the emitted light of the site immediately after the treatment with the composition from the light intensity of the emitted light at a later time and/or the light intensity of the emitted light of the adjacent untreated area immediately after the treatment of the site with the composition from the light intensity of the emitted light of th
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: December 18, 2007
    Assignee: LANXESS Deutschland GmbH
    Inventors: Karl-Heinz Drenker, Hans-Jörg Seiler, Volker Kahle, Norbert Donkels
  • 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
  • Method for marking sites
    Publication number: 20070057181
    Abstract: A method for determining changes of a site, wherein the site is treated with an aqueous dispersion having at least one binder, at least one substance emitting visible light on UV exposure, at least one binder and, optionally, a dispersant and the site thus treated and/or untreated adjacent sites are exposed to UV light and the deviation of the light intensity of the emitted light of a partial area of the site from the mean light intensity of the emitted light of the site area and/or the light intensity of the emitted light of a part of the adjacent, untreated area from the mean light intensity of the emitted light of the adjacent untreated areas and/or the light intensity of the emitted light of the site immediately after the treatment with the composition from the light intensity of the emitted light at a later time and/or the light intensity of the emitted light of the adjacent untreated area immediately after the treatment of the site with the composition from the light intensity of the emitted light of th
    Type: Application
    Filed: September 11, 2006
    Publication date: March 15, 2007
    Inventors: Karl-Heinz Drenker, Hans-Jorg Seiler, Volker Kahle, Norbert Donkels
  • Method for marking sites
    Patent number: 7126119
    Abstract: A composition and a method for determining changes of a site. The composition includes an aqueous dispersion including at least one binder, at least one substance emitting visible light on UV exposure and optionally a dispersant. The method includes treating the site with a composition, exposing the treated site and/or the untreated areas adjacent thereto to UV light, and determining the deviation of the light intensity of the emitted light of the site Immediately after the treatment with the composition from the light intensity of the emitted light at a later time.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: October 24, 2006
    Assignee: Bayer Chemicals AG
    Inventors: Karl-Heinz Drenker, Hans-Jörg Seiler, Volker Kahle, Norbert Donkels
  • Method for marking sites
    Publication number: 20050218321
    Abstract: A method for determining changes of a site, which is characterized in that a) the site is treated with a composition and b) the site thus treated and/or the untreated areas adjacent thereto are exposed to UV light and the deviation b1) of the light intensity of the emitted light of a partial area of the site from the mean light intensity of the emitted light of the site area and/or b2) the light intensity of the emitted light of a part of the adjacent, untreated area from the mean light intensity of the emitted light of the adjacent untreated areas and/or b3) the light intensity of the emitted light of the site immediately after the treatment with the composition from the light intensity of the emitted light at a later time and/or b4) the light intensity of the emitted light of the adjacent untreated area immediately after the treatment of the site with the composition from the light intensity of the emitted light of the adjacent, untreated area at a later time are determined, the composition being an aqueous
    Type: Application
    Filed: April 5, 2004
    Publication date: October 6, 2005
    Inventors: Karl-Heinz Drenker, Hans-Jorg Seiler, Volker Kahle, Norbert Donkels
  • 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