Patents by Inventor Helge Brockmann

Helge Brockmann 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).

  • Secured documents identified with anti-stokes fluorescent compositions
    Patent number: 6686074
    Abstract: The present invention provides a secured document including a composition capable of anti-Stokes fluorescence containing an ion capable of absorption of electromagnetic radiation, an ion capable of emitting electromagnetic radiation, and a matrix composition comprising gadolinium, yttrium, lanthanum, and thulium, wherein the wavelength of the absorbed electromagnetic radiation is shorter than the wavelength of the emitted of the absorbed electromagnetic radiation, and wherein the concentrations of the absorbing and emitting ions are adjusted to achieve concentration quenching of anti-Stokes luminescence.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: February 3, 2004
    Assignee: Bundesdruckerei GmbH
    Inventors: Oliver Muth, Helge Brockmann, Wolfgang Schmidt, Anett Bailleu, Gabriele Brauer, Manfred Paeschke, Benedikt Ahlers, Arnim Franz-Burholz, Hans Zerbel
  • Secured documents indentified with anti-stokes fluorescent compositions
    Publication number: 20020130303
    Abstract: The present invention provides a secured document including a composition capable of anti-Stokes fluorescence containing an ion capable of absorption of electromagnetic radiation, an ion capable of emitting electromagnetic radiation, and a matrix composition comprising gadolinium, yttrium, lanthanum, and luetium, wherein the wavelength of the emitted electromagnetic radiation is shorter than the wavelength of the absorbed electromagnetic radiation, and wherein the concentrations of the absorbing and emitting ions are adjusted to achieve concentration quenching of anti-Stokes luminescence.
    Type: Application
    Filed: March 18, 2002
    Publication date: September 19, 2002
    Applicant: Bundesdruckerei GmbH
    Inventors: Oliver Muth, Helge Brockmann, Wolfgang Schmidt, Anett Bailleu, Gabriele Brauer, Manfred Paeschke, Benedikt Ahlers, Arnim Franz-Burholz, Hans Zerbel