Patents Assigned to (2) BUNDESDRUCKEREI GMBH
  • Zinc sulfide electroluminophores and method for production thereof
    Publication number: 20060230980
    Abstract: Zinc sulfide electroluminophores are prepared from solutions of zinc salts with hydrogen sulfide. The zinc sulfide compounds are mixed with activator and coactivator compounds to produce luminophores, and the mixtures are fired in the presence of fixing agents. These fired materials are then treated in an acid bath, washed, neutralized, and optionally filtered and dried.
    Type: Application
    Filed: May 10, 2006
    Publication date: October 19, 2006
    Applicants: (1) LEUCHTSOFFWERK BREITUNGEN GMBH, (2) BUNDESDRUCKEREI GMBH
    Inventors: Frank Kappe, Benedikt Ahlers, Arnim Franz-Burgholz, Hans-Jurgen Limburg, Detlef Starick, Monika Voh