Patents by Inventor Ralf Ulrich

Ralf Ulrich 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).

  • Elastomer modifed olyamides for improving the breaking resistance of films and hollow elements
    Publication number: 20060189742
    Abstract: The invention relates to molded flexible polyamide materials containing polyamide and olefin/vinyl acetate copolymers, films and hollow elements comprising at least one layer of said molded materials, and methods for producing the molded materials, films, and hollow elements.
    Type: Application
    Filed: August 13, 2003
    Publication date: August 24, 2006
    Inventors: Ralf Ulrich, Matthias Mahlke, Marcus Schafer, Helmut Schulte, Peter Schwarz, Martin Hoch, Roland Parg
  • Method and device for tension leveling a cold-rolled strip and regulating the degree of leveling
    Patent number: 6925845
    Abstract: The invention relates to a method for tension levelling a cold-rolled strip, whereby the strip passes through a series of break rolls and a series of traction rolls and in the course of its extension is subjected to traction between the two series of rolls. The strip is bent under traction in a series of high-traction rolls, located between the brake roll and the traction roll series, in order to increase the degree of levelling. To achieve this, the series of high-traction rolls between the brake and the traction rolls has at least two traction rolls for generating the strip traction and bending operation.
    Type: Grant
    Filed: August 1, 2001
    Date of Patent: August 9, 2005
    Assignee: SMS Demag Aktiengesellschaft
    Inventors: Holger Behrens, Hans Georg Hartung, Ralf Ulrich, Bernd Kreft, Stefan Melster, Bodo Falkenhahn, Andreas Gramer
  • Method and device for tension levelling a cold-rolled strip and regulating the degree of levelling
    Publication number: 20040020258
    Abstract: The invention relates to a method for tension levelling a cold-rolled strip, whereby the strip passes through a series of brake rolls and a series of traction rolls and in the course of its extension is subjected to traction between the two series of rolls. The strip is bent under traction in a series of high-traction rolls, located between the brake roll and the traction roll series, in order to increase the degree of levelling. To achieve this, the series of high-traction rolls between the brake and the traction rolls has at least two traction rolls for generating the strip traction and bending operation.
    Type: Application
    Filed: February 20, 2003
    Publication date: February 5, 2004
    Inventors: Holger Behrens, Hans Georg Hastung, Ralf Ulrich, Bernd Kreft, Stefan Melster, Bode Falkenhahn, Andreas Gramer