Patents by Inventor Marcus Geerkens

Marcus Geerkens 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).

  • Optical elements with gradient structure
    Patent number: 8389592
    Abstract: Optical elements, in particular for holographic applications, have a gradient structure formed by a refractive index gradient and include one or more organic polymers and at least one ionic liquid.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: March 5, 2013
    Assignee: Leibniz-Institut fuer Neue Materialien Gemeinnuetzige GmbH
    Inventors: Peter William de Oliveira, Michael Veith, Peter Rogin, Hechun Lin, Marcus Geerkens
  • Optical Elements with Gradient Structure
    Publication number: 20100321784
    Abstract: The invention relates to optical elements with gradient structure, in particular for holographic applications, wherein the gradient structure is formed by a refractive index gradient and a method for production of said optical elements with gradient structure.
    Type: Application
    Filed: February 11, 2009
    Publication date: December 23, 2010
    Inventors: Peter William de Oliveira, Michael Veith, Peter Rogin, Hechun Lin, Marcus Geerkens