Patents by Inventor Danuta Dutczak

Danuta Dutczak 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).

  • Nitridosilicates co-doped with zirconium and hafnium
    Patent number: 9028716
    Abstract: The invention relates to compounds of the formula (I) Ma2-y (Ca,Sr,Ba)1-x-ySi5-zMezN8:Eux Cey (I), where Ma=Li, Na and/or K Me=Hf4+ and/or Zr4+ x=0.0015 to 0.20 and y=0 to 0.15 z<4, and to a process for the preparation of these compounds and to the use as phosphors and conversion phosphors for conversion of the blue or near-UV emission from an LED.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: May 12, 2015
    Assignee: Merck Patent GmbH
    Inventors: Holger Winkler, Ralf Petry, Tim Vosgroene, Thomas Juestel, Dominik Uhlich, Danuta Dutczak
  • PHOSPHORS
    Publication number: 20120300155
    Abstract: The invention relates to compounds of the formula (I), A2-0.5y-?EuxSi5N8-yOy (I), where A stands for one or more elements selected from Ca, Sr, Ba, and x stands for a value from the range 0.005 to 1, and y stands for a value from the range 0.01 to 3, to mixtures thereof, to a process for the preparation of these phosphors and mixtures, and to the use thereof as conversion phosphors.
    Type: Application
    Filed: December 28, 2010
    Publication date: November 29, 2012
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Holger Winkler, Peter Barnekow, Clemens Kuehn, Ralf Petry, Tim Vosgroene, Thomas Juestel, Dominik Uhlich, Arturas Katelnikovas, Danuta Dutczak
  • NITRIDOSILICATES CO-DOPED WITH ZIRCONIUM AND HAFNIUM
    Publication number: 20110304261
    Abstract: The invention relates to compounds of the formula (I) Ma2-y(Ca,Sr,Ba)1-x-ySi5-zMezN8:EuxCey (I), where Ma=Li, Na and/or K Me=Hf4+ and/or Zr4+ x=0.0015 to 0.20 and y=0 to 0.15 z<4, and to a process for the preparation of these compounds and to the use as phosphors and conversion phosphors for conversion of the blue or near-UV emission from an LED.
    Type: Application
    Filed: February 1, 2010
    Publication date: December 15, 2011
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Holger Winkler, Ralf Petry, Tim Vosgroene, Thomas Juestel, Dominik Uhlich, Danuta Dutczak