Patents by Inventor Bernhard R. Durschang

Bernhard R. Durschang 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).

  • Process for the production of sequences of interface layers
    Patent number: 6393868
    Abstract: The present invention relates to a novel process for the production of sequences of interference layers composed of layers i of prescribed thicknesses d(i) and refractive indices n(i). In this process a stack of at least two layers i of glasses having refractive indices n(i) and thicknesses d0(i), which are each larger than the predetermined thicknesses d(i) by the same multiplying factor, is provided. The stack is heated to a temperature above the transformation temperature of the glasses and during or after heating, the stack is drawn in such a manner that the individual layers obtain the prescribed thicknesses d(i). After this the drawn stack is cooled.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: May 28, 2002
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Manfred Krauss, Hans-Georg Krolla, Eckart Hussmann, Bernhard R. Durschang, Gerd Muller