Patents by Inventor Jorg Oberkofler

Jorg Oberkofler 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).

  • Cellulose particles, method for producing them and their use
    Patent number: 6635754
    Abstract: Cellulose particles are described that have cationic groups in their interior. In one aspect, at least 10%, and preferably 50% or more, of the cationic groups are present within the particle interior. Also disclosed are particular combinations of such cellulose particles with certain water-soluble polymers that are well suited for use in the papermaking industry.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: October 21, 2003
    Assignee: TFM Handels-Aktiengesellschaft
    Inventors: Jörg Oberkofler, Thomas Moser, Anton Schmalhofer, Jeffrey F. Spedding
  • Sulphur-free lignin and derivatives thereof for reducing the formation of slime and deposits in industrial plants
    Publication number: 20030156970
    Abstract: The invention concerns a method for the reducing the formation of slime and deposits in industrial plants, in which water or aqueous process liquids are circulated, sulphur-free lignin or a derivative thereof being added to the system in a quantity proportional to the quantity of the slime and deposit-causing substances present in the water.
    Type: Application
    Filed: December 10, 2002
    Publication date: August 21, 2003
    Inventors: Jorg Oberkofler, Jeff Spedding
  • Method for producing cellulose particles
    Patent number: 6174358
    Abstract: A method for producing cellulose particles whereby a cellulose solution is dispersed in a regenerant or nonsolvent and the cellulose is regenerated or precipitated in dispersed form into cellulose particles.
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: January 16, 2001
    Assignee: Cellcat GmbH
    Inventors: Jörg Oberkofler, Alexander Brandner, Jeffrey F. Spedding, Anton Schmalhofer
  • Cellulose particles, method for producing them and their use
    Patent number: 6080277
    Abstract: Cellulose particles are provided which have cationic groups even in the interior.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: June 27, 2000
    Assignee: TFM Handels-Aktiengesellschaft
    Inventors: Jorg Oberkofler, Thomas Moser, Anton Schmalhofer, Jeffrey F. Spedding
  • Method for reducing the build-up of slime and/or film in water circulation systems
    Patent number: 5242593
    Abstract: In order to reduce the build-up of slime and/or film in plants which circulates water, non-sessile microorganisms are added in single form to the circulating water, whereby the quantity of microorganisms added is about 1 to 10.sup.10 microorganisms per kg of the total organic carbon (TOC) of the organic substances present in the circulating water.
    Type: Grant
    Filed: April 1, 1991
    Date of Patent: September 7, 1993
    Inventors: Jorg Oberkofler, Ing. Christine