Patents by Inventor Ronald Sigl

Ronald Sigl 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).

  • Method for fiber stock preparation
    Patent number: 7179347
    Abstract: A method for the preparation of fiber stock for the production of paper or cardboard, including the steps of: a) Supplying fibers in the form of a suspension that has a predetermined solids content, b) Loading of the fibers with a precipitation product, without refining the stock, c) Refining of the fibers after completion of the loading process, in order to improve the freeness value and/or to alter the fiber characteristics, and d) Transporting of the fiber stock suspension in direction of the paper machine.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: February 20, 2007
    Assignee: VOITH Paper Patent GmbH
    Inventors: Joerg Rheims, Oliver Heise, Klaus Doelle, Ronald Sigl, Werner Witek
  • Method for the treatment of fiber material
    Publication number: 20070006984
    Abstract: The method serves for the altering of suspended paper fibers or pulp fibers, in particular to increase the strength of the paper made from these fibers. Two refining surfaces are pressed toward one another and moved such that a relative speed prevails between the refining surfaces and the pulp in the refining zone which is as low as possible. The method can be carried out particularly easily with refining bodies which carry a refining surface and which are rolled off on the inner side of a refining drum carrying the refining surface.
    Type: Application
    Filed: July 30, 2003
    Publication date: January 11, 2007
    Inventors: Wolfgang Berger, Klaus Eibinger, Rudolf Eichinger, Dietmar Grueneis, Andrea Hierner, Walter Ruef, Ronald Sigl, Helmut Stark, Peter-Rigobert Winter, Erika Winter
  • Method and device for loading fibers in a fiber stock suspension with a filler
    Publication number: 20040154771
    Abstract: A method and a device for loading of fibers that are contained in a fibrous suspension, with a filler by way of a chemical precipitation reaction. A fibrous suspension is supplied to a pump disperger where it is treated by shear forces in order to break down larger fiber agglomerates into smaller ones, and/or into individual fibers. At the same time the pump disperger serves as a reactor for the chemical precipitation reaction.
    Type: Application
    Filed: August 14, 2003
    Publication date: August 12, 2004
    Inventors: Joerg Rheims, Oliver Heise, Klaus Doelle, Ronald Sigl, Werner Witek
  • Method for fiber stock preparation
    Publication number: 20040149403
    Abstract: A method for the preparation of fiber stock for the production of paper or cardboard, including the steps of:
    Type: Application
    Filed: September 26, 2003
    Publication date: August 5, 2004
    Inventors: Joerg Rheims, Oliver Heise, Klaus Doelle, Ronald Sigl, Werner Witek