Patents by Inventor Siegfried Stapel

Siegfried Stapel 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).

  • PAPER PRODUCT AND METHOD FOR PRODUCTION THEREOF AND USE THEREOF
    Publication number: 20100000694
    Abstract: The invention relates to a method for the production of flat paper products with increased relative wet tensile strength and softness from a pulp suspension in which a block copolymer is added to the pulp suspension and/or the paper product is treated during production thereof or subsequently with the block copolymer. The invention likewise relates to a paper product produced in this manner. Paper products of this type are used in particular as tissue products.
    Type: Application
    Filed: July 30, 2007
    Publication date: January 7, 2010
    Applicants: FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG e.V., SCA HYGIENE PRODUCTS GMBH
    Inventors: Joachim Storsberg, André Laschewsky, Stephan Eichhorn, Siegfried Stapel
  • Paper Product with Increased Relative Wet Tensile Strength and Softness, Method for Production and Use Thereof
    Publication number: 20080302497
    Abstract: The present invention relates to flat paper products having an increased relative wet strength and softness, a method for the production of the same and also the use of paper products of this type in the form of tissue products. This is achieved by a cross-linkage of the cellulose fibres contained in the paper product with a cationic graft copolymer which is constructed on the basis of polyethyleneoxide- or polyethyleneglycol segments and polyethyleneimine segments.
    Type: Application
    Filed: July 21, 2005
    Publication date: December 11, 2008
    Inventors: Joachim Storsberg, Stefano Bruzzano, Andre Laschewsky, Nathalie Sieverling, Stephan Eichhorn, Siegfried Stapel