Patents by Inventor Frank Büellesfeld

Frank Büellesfeld 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).

  • Microprism and microrod lenses, method for the production thereof
    Patent number: 7963122
    Abstract: The invention relates to a method and an apparatus for producing optical glass elements, in particular optical prisms or optical rod lenses, using a drawing process. The geometry of the glass strand which is to be produced is controlled by means of cooling or heating elements positioned at least around portions of the periphery or longitudinal axis of the glass strand, inside or outside the heating apparatus.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: June 21, 2011
    Assignee: Schott AG
    Inventors: Frank Büellesfeld, Andreas Langsdorf, Ulrich Lange, Volker Plapper