Patents by Inventor Horst Redlof

Horst Redlof 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).

  • Ecofriendly cationic polyelectrolytes
    Patent number: 7375173
    Abstract: The invention relates to cationic water-soluble polyelectrolytes, especially terpolymers, which are obtained by polymerising monomers of (meth)acrylamide, a quaternised (meth)acrylamide derivative, a (meth)acrylic acid derivative and/or hydrolysis-stable cationic monomers. The composition of the polyelectrolytes is characterised by a toxicity index formula Fi=(QTP?2QME)/10?1 wherein QTP represents the total cationic charge of the polymer and QME represents the charge part of the ester type monomer. The invention also relates to the production and use of said polyelectrolytes and water-in-water polymer dispersions which contain said polyelectrolytes.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: May 20, 2008
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: Norbert Steiner, Gregor Herth, Werner Fischer, Horst Redlof
  • Ecofriedly cationic polyelectrolytes
    Publication number: 20050242045
    Abstract: The invention relates to cationic water-soluble polyelectrolytes, especially terpolymers, which are obtained by polymerising monomers of (meth)acrylamide, a quaternised (meth)acrylamide derivative, a (meth)acrylic acid derivative and/or hydrolysis-stable cationic monomers. The composition of the polyelectrolytes is characterised by a toxicity index formula Fi=(QTP?2QME)/10?1 wherein QTP represents the total cationic charge of the polymer and QME represents the charge part of the ester type monomer. The invention also relates to the production and use of said polyelectrolytes and water-in-water polymer dispersions which contain said polyelectrolytes.
    Type: Application
    Filed: July 30, 2003
    Publication date: November 3, 2005
    Inventors: Norbert Steiner, Gregor Herth, Werner Fischer, Horst Redlof