Patents by Inventor Stefan D. Beckers

Stefan D. Beckers 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).

  • Cellulose extrusion
    Patent number: 7037096
    Abstract: Apparatus for the production of extruded blown cellulose film from a solution of cellulose, water and an amine-oxide, which includes:—extrusion apparatus for continuously extruding a cellulose solution to produce a cellulose film;—solidifying apparatus for solidifying the extruded cellulose film;—drawing apparatus positioned downstream of the extrusion apparatus for continuously drawing the extruded cellulose film from the extrusion apparatus; and a tubular member for containing precipitation apparatus and for receiving an extruded blown film wherein the tubular member is situated within a precipitation bath. The invention also includes a method of extruding blown film.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: May 2, 2006
    Assignee: Fraunhofer-Gesellschaft zur Forderung der Angewandteh Forschung E.V.
    Inventors: Stefan D. Beckers, Peter Weigel, Hans-Peter Fink, Michael Dosz, Hans-Joachim Purz
  • Double bubble process for manufacturing orientated cellulose films
    Publication number: 20030183976
    Abstract: This application relates to producing biaxially stretched tubular cellulose films for the food industry. In particular, the biaxial stretching is obtained by using rollers to stretch the casings longitudinally and to use increased air pressure inside the films to radially stretch the casings. The obtained product may also be cut to provide longitudinal strips for the production of smaller tubular films.
    Type: Application
    Filed: December 13, 2002
    Publication date: October 2, 2003
    Inventors: Ivo G. Hendriks, Roger H. Hendrikx, Stefan D. Beckers, Mark Vrijsen, Dirk M. Hellemans