Patents by Inventor Hans-Peter Fink

Hans-Peter Fink 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).

  • Publication number: 20050234229
    Abstract: The invention relates to a method for the direct production of fibres, films, beads, sponges and other moulded articles made of cellulose carbamate which was obtained by conversion of cellulose with urea at increased temperature and direct dissolution of the reaction product in sodium hydroxide solution without an additional washing and cleaning operation.
    Type: Application
    Filed: May 9, 2003
    Publication date: October 20, 2005
    Inventors: Fritz Loth, Eckehart Schaaf, Peter Weigel, Hans-Peter Fink
  • Publication number: 20050215778
    Abstract: The invention relates to a method for the production of cellulose carbamate by reactive extrusion and for the production of moulded articles made of regenerated cellulose. The method for the production of cellulose carbamate is based thereby on the activation of cellulose, subsequent separation of the activation solution and following thereon reactive extrusion of the activated cellulose. Typical examples of moulded articles which can be produced therefrom are fibres, films, beads, sponges or sponge-type cloths.
    Type: Application
    Filed: May 9, 2003
    Publication date: September 29, 2005
    Inventors: Fritz Loth, Hans-Peter Fink, Peter Weigel
  • Publication number: 20050019561
    Abstract: The invention concerns a profiled part and aggregates for making same. The aggregates contain a material for plastic matrix technique and an adherence promoter. Regenerated cellulose fiber elements are incorporated in the matrix material. The characteristic profile of a profiled part made from such aggregates corresponds substantially to that of profiled PC/ABS parts, the profiled part of the invention being, however, capable of being produced at a more advantageous cost, being more recyclable and being, moreover, capable of being shaped at lower temperatures.
    Type: Application
    Filed: October 17, 2002
    Publication date: January 27, 2005
    Inventors: Jochen Gassan, Rudolf Einsiedel, Hans-Peter Fink, Peter Weigel
  • Patent number: 6699542
    Abstract: The invention relates to a method of manufacturing tubular films from a solution of a mixture if cellulose and proteins by extrusion blowing the solution over an air gap into a precipitation bath, and to the films produced with this method and their application.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: March 2, 2004
    Assignee: Fraunhofer-Gesellschaft zur Förderung der Angewandten forschung e.V.
    Inventors: Peter Weigel, Hans-Peter Fink, Michael Doss, Stefan Dominic Beckers, Roger Henri Hendrikx
  • Publication number: 20030062648
    Abstract: This invention relates to a process for the production of a cellulose molded body according to the amine-oxide process, which results in a molded body having reduced and effectively controllable fibrillation properties.
    Type: Application
    Filed: September 18, 2002
    Publication date: April 3, 2003
    Inventors: Peter Weigel, Hans-Peter Fink, Michael Doss, Stefan Dominic Beckers, Roger Henri Hendrikx
  • Patent number: 6521169
    Abstract: Process for the production of cellulose shaped bodies through the precipitation of a cellulose solution containing cellulose dissolved in an amine oxide/water system in a precipitation bath, wherein the solution contains additional cellulose fibers.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: February 18, 2003
    Assignee: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung e.V.
    Inventors: Peter Weigel, Hans-Peter Fink, Konrad Frigge
  • Patent number: 6113842
    Abstract: The invention is directed to a method of manufacturing oriented cellulose films by spinning non-derivated cellulose dissolved in amino oxides into a precipitating bath. The cellulose solution is extruded downward through a film-blowing nozzle and an external air gap into the precipitating bath. The spun cellulose film can be inflated after exiting the film-blowing nozzle.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: September 5, 2000
    Assignee: Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E. V.
    Inventors: Peter Weigel, Hans-Peters Fink, Konrad Frigge, Wolfgang Schwarz
  • Patent number: 6103162
    Abstract: The invention relates to a process for producing flexible cellulose fibres by spinning solutions of the cellulose through spinnerets over an air layer in an amine oxide-containing aqueous and/or alcoholic regenerating bath followed by drying, in which the damp threads from the spinneret are taken before drying through at least one post-treatment bath containing water and water-miscible alkanols, diols, triols or mixtures thereof, and a washing bath containing water, an alkanol, a diol or a triol.
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: August 15, 2000
    Assignee: Fraunhofer-Gesellschaftzur Forderung der Angewandten Forschung e.V.
    Inventors: Konrad Frigge, Hans-Peter Fink, Peter Weigel, Ernst Walenta, Helmut Remde
  • Patent number: 5993710
    Abstract: The invention pertains to a process for manufacturing cellulose molded mers wherein a solution dissolved in amine oxides is shaped in a nozzle and the shaped solution is led after an air gap into a precipitation medium. The molded solution is passed successively through at least two precepitation media, which are selected so that a slower coagualation takes place at least in the first precipitation medium than the final precipitation medium.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: November 30, 1999
    Assignee: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung e.V.
    Inventors: Peter Weigel, Hans-Peter Fink, Hans Joachim Purz, Konrad Frigge, Ulrich Wachsmann, Martin Nywalt