Patents by Inventor Gerhard Schoppel

Gerhard Schoppel 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 and apparatus for defined comminution of polymer gels
    Patent number: 7568643
    Abstract: An apparatus and process for defined comminution of polymer gels, wherein the apparatus includes a static cutting element in the form of a cutting screen. The cutting element is optionally supported, and has pretensioned wires, rods, fibers, wovens, stencils or profiles. Optionally, a dynamic cutting element is provided for shortening the gel strands or particles obtained by means of the static cutting unit. Also, a feed unit is provided for feeding the polymer gel to the static cutting element in a clamped-in, shape-stable state. The feeding of the gel is effected batchwise or continuously.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: August 4, 2009
    Assignee: DSM Fine Chemicals Austria Nfg GmbH & Co. KG
    Inventors: Gerhard Schoppel, Georg Haeubl, Marion Wagner, Helmuth Kirsch, Erich Schulz, Gerald Summer
  • Process and apparatus for defined communication of polymer gels
    Patent number: 7566015
    Abstract: An apparatus and process for defined comminution of polymer gels, wherein the apparatus includes a static cutting element in the form of a cutting screen. The cutting element is optionally supported, and has pretensioned wires, rods, fibers, wovens, stencils or profiles. Optionally, a dynamic cutting element is provided for shortening the gel strands or particles obtained by means of the static cutting unit. Also, a feed unit is provided for feeding the polymer gel to the static cutting element in a clamped-in, shape-stable state. The feeding of the gel is effected batchwise or continuously.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: July 28, 2009
    Assignee: DSM Fine Chemicals Austria Nfg GmbH & Co KG
    Inventors: Gerhard Schoppel, Georg Haeubl, Marion Wagner, Helmuth Kirsch, Erich Schulz, Gerald Summer
  • Process and apparatus for defined comminution of polymers gels
    Publication number: 20080230642
    Abstract: An apparatus and process for defined comminution of polymer gels, wherein the apparatus includes a static cutting element in the form of a cutting screen. The cutting element is optionally supported, and has pretensioned wires, rods, fibers, wovens, stencils or profiles. Optionally, a dynamic cutting element is provided for shortening the gel strands or particles obtained by means of the static cutting unit. Also, a feed unit is provided for feeding the polymer gel to the static cutting element in a clamped-in, shape-stable state. The feeding of the gel is effected batchwise or continuously.
    Type: Application
    Filed: May 28, 2008
    Publication date: September 25, 2008
    Inventors: Gerhard Schoppel, Georg Haeubl, Marion Wagner, Helmuth Kirsch, Erich Schulz, Gerald Summer
  • Preparation of alkylated N- or amino, ammonium or spirobicyclic ammonium group-containing, crosslinked polymers
    Patent number: 7105631
    Abstract: Process for the preparation of alkylated N- or amino, ammonium or spirobicyclic ammonium group-containing, crosslinked polymer gels, which is characterized in that a) in the crosslinkage step an aqueous solution of a polymer obtained by polymerization of the corresponding monomer is adjusted to a pH of 7.5–14 at a temperature of 0 to 90° C.
    Type: Grant
    Filed: September 2, 2003
    Date of Patent: September 12, 2006
    Assignee: DSM Fine Chemicals Austria NFG GmbH & CO KG
    Inventors: Michael Stanek, Marion Wagner, Gerhard Schoppel, Georg Haeubl, Ernst Wressnegger, Walter Raml
  • Preparation of alkylated N- or amino, ammonium or spirobicyclic ammonium group-containing, crosslinked polymers
    Publication number: 20040039086
    Abstract: Process for the preparation of alkylated N- or amino, ammonium or spirobicyclic ammonium group-containing, crosslinked polymer gels, which is characterized in that
    Type: Application
    Filed: September 2, 2003
    Publication date: February 26, 2004
    Inventors: Michael Stanek, Marion Wagner, Gerhard Schoppel, Georg Haeubl, Ernst Wressnegger, Walter Raml
  • Process and apparatus for defined comminution of polymer gels
    Publication number: 20030080226
    Abstract: Apparatus for defined comminution of polymer gels, constructed of
    Type: Application
    Filed: October 16, 2002
    Publication date: May 1, 2003
    Inventors: Gerhard Schoppel, Georg Haeubl, Marion Wagner, Helmuth Kirsch, Erich Schulz, Gerald Summer