Patents by Inventor Daniel Cleff

Daniel Cleff 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).

  • COLORING PROCESS FOR POLY(METH)ACRYLATES WITH WATER-BASED LIQUID DYES, AND WATER-BASED LIQUID DYES
    Publication number: 20180105677
    Abstract: The invention relates to an aqueous colorant preparation for coloring thermoplastic plastics.
    Type: Application
    Filed: December 15, 2017
    Publication date: April 19, 2018
    Inventors: Ursula GOLCHERT, Klaus SCHULTES, Stefan NAU, Ernst BECKER, Manuel KAISER, Juergen GROENEN, Daniel CLEFF, Viola ROSNER, Norbert BENDZKO
  • COLORING PROCESS FOR POLY(METH)ACRYLATES WITH WATER-BASED LIQUID DYES, AND WATER-BASED LIQUID DYES
    Publication number: 20150322240
    Abstract: The invention relates to an aqueous colorant preparation for coloring thermoplastic plastics.
    Type: Application
    Filed: July 21, 2015
    Publication date: November 12, 2015
    Inventors: Ursula GOLCHERT, Klaus SCHULTES, Stefan NAU, Ernst BECKER, Manuel KAISER, Juergen GROENEN, Daniel CLEFF, Viola ROSNER, Norbert BENDZKO
  • WATER-BASED LIQUID COLOR CONTAINING THERMOSTABLE DISPERSION ADDITIVES FOR THE COLORING POLY(METH)ACRYLATES
    Publication number: 20130096244
    Abstract: The invention relates to a method for coloring thermoplastic molding compounds, preferably a polymethyl(meth)acrylate molding compound, using novel aqueous colorant preparations. The invention further relates to a novel water-based colorant preparation.
    Type: Application
    Filed: July 5, 2011
    Publication date: April 18, 2013
    Applicant: Evonik Roehm GmbH
    Inventors: Sabine Schwarz-Barac, Roger Recktenwald, Thorsten Goldacker, Ursula Golchert, Victor Khrenov, Stefan Nau, Nils Mehler, Krzysztof Sado, Ernst Becker, Norbert Bendzko, Joachim Henn, Markus Vogt, Markus Schubert, Daniel Cleff, Birgit Riedel-Bendzko
  • COLORING PROCESS FOR POLY (METH) ACRYLATES WITH WATER-BASED LIQUID DYES AND WATER-BASED LIQUID DYES
    Publication number: 20110136964
    Abstract: The invention relates to an aqueous colorant preparation for coloring thermoplastic plastics.
    Type: Application
    Filed: July 10, 2009
    Publication date: June 9, 2011
    Applicant: EVONIK ROEHM GMBH
    Inventors: Ursula Golchert, Klaus Schultes, Stefan Nau, Ernst Becker, Manuel Kaiser, Juergen Groenen, Daniel Cleff, Viola Rosner, Norbert Bendzko