Patents by Inventor Hans-Jürgen Limburg

Hans-Jürgen Limburg 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).

  • IMPROVED GARNET LUMINOPHORE AND PROCESS FOR PRODUCTION THEREOF AND LIGHT SOURCE
    Publication number: 20160215211
    Abstract: The present invention relates to an improved garnet luminophore which can be excited in a first wavelength range by electromagnetic radiation, as a result of which electromagnetic radiation can be emitted by the garnet luminophore in a second wavelength range. The invention additionally relates to a process for production of an improved garnet luminophore and to a light source comprising the garnet luminophore of the invention. The garnet luminophore has been activated with trivalent cerium and has a host lattice of the general chemical formula (LuxYyGdzAKk)3(AlbBcPd) (OeXf)12 where AK=Li, Na and/or K; B=Ga and/or In; and X=F, Cl and/or Br.
    Type: Application
    Filed: August 26, 2014
    Publication date: July 28, 2016
    Inventor: Hans-Juergen LIMBURG
  • Zinc sulfide electroluminophores and method for production thereof
    Patent number: 7067071
    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: Grant
    Filed: November 9, 2000
    Date of Patent: June 27, 2006
    Assignees: Bundesdruckeri GmbH, Leuchtstoffwerk Breitungen GmbH
    Inventors: Frank Kappe, Benedikt Ahlers, Arnim Franz-Burgholz, Hans-Jürgen Limburg, Detlef Starick, Monika Voh