Patents by Inventor Christian Gerhard Schafer

Christian Gerhard Schafer 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).

  • Manufacture of composite optical materials
    Patent number: 9561615
    Abstract: A polymer opal material comprises a three dimensionally periodic arrangement of core particles in a matrix material and exhibits structural color via Bragg reflection. IN a process for manufacturing such a material, a sandwich structure is provided, of a precursor composite material held between first and second sandwiching layers. A relative shear strain of at least 10% is imposed on the precursor composite material by curling the sandwich structure around a roller. The shear strain is cycled, in order to promote the formation of the three dimensional periodic arrangement.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: February 7, 2017
    Assignees: CAMBRIDGE ENTERPRISE LIMITED, FRAUNHOFER-GESELLSCHAFT ZUR FORDERGUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Jeremy John Baumberg, David Snoswell, Christopher Finlayson, Qibin Zhao, Gotz Peter Hellmann, Peter Wolfgang Andreas Spahn, Christian Gerhard Schafer
  • Manufacture of Composite Optical Materials
    Publication number: 20130288035
    Abstract: A polymer opal material comprises a three dimensionally periodic arrangement of core particles in a matrix material and exhibits structural colour via Bragg reflection. IN a process for manufacturing such a material, a sandwich structure is provided, of a precursor composite material held between first and second sandwiching layers. A relative shear strain of at least 10% is imposed on the precursor composite material by curling the sandwich structure around a roller. The shear strain is cycled, in order to promote the formation of the three dimensional periodic arrangement.
    Type: Application
    Filed: January 12, 2012
    Publication date: October 31, 2013
    Applicant: Cambridge Enterprise Limited
    Inventors: Jeremy John Baumberg, David Snoswell, Christopher Finlayson, Qibin Zhao, Gotz Peter Hellmann, Peter Wolfgang Andreas Spahn, Christian Gerhard Schafer