Patents by Inventor Meinhard Nitschke

Meinhard Nitschke 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 the classification of water absorbent polymer particles
    Patent number: 9751110
    Abstract: A process for continuously classifying water-absorbing polymer beads by means of at least one screen, at least one screen having at least one guide device on the screen surface.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: September 5, 2017
    Assignee: BASF AKTIENGESELLSCHAFT
    Inventors: Uwe Stueven, Rüdiger Funk, Matthias Weismantel, Meinhard Nitschke, Filip Mees, Leo Van Miert
  • Process for preparing water-absorbing polymer particles
    Patent number: 7682702
    Abstract: A process for producing water-absorbing polymeric particles comprises the steps of i) drying a hydrogel to produce a dried hydrogel, ii) separating incompletely dried polymeric particles from the dried hydrogel, and iii) drying the separated-off incompletely dried polymeric particles, wherein the separated incompletely dried polymeric particles are comminuted before said drying iii).
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: March 23, 2010
    Assignee: BASF SE
    Inventor: Meinhard Nitschke
  • Method for the Classification of Water Absorbent Polymer Particles
    Publication number: 20090261023
    Abstract: A process for continuously classifying water-absorbing polymer beads by means of at least one screen, at least one screen having at least one guide device on the screen surface.
    Type: Application
    Filed: September 25, 2006
    Publication date: October 22, 2009
    Applicant: BASF SE
    Inventors: Uwe Stueven, Rudiger Funk, Matthias Weismantel, Meinhard Nitschke, Filip Mees, Leo Van Miert
  • Process for Preparing Water-Absorbing Polymer Particles
    Publication number: 20080287631
    Abstract: A process for producing water-absorbing polymeric particles comprises the steps of i) drying a hydrogel to produce a dried hydrogel, ii) separating incompletely dried polymeric particles from the dried hydrogel, and iii) drying the separated-off incompletely dried polymeric particles, wherein the separated incompletely dried polymeric particles are comminuted before said drying iii).
    Type: Application
    Filed: November 10, 2006
    Publication date: November 20, 2008
    Applicant: BASF SE
    Inventor: Meinhard Nitschke