Patents by Inventor Larz Zander

Larz Zander 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).

  • Polyurethane dispersions
    Publication number: 20030119979
    Abstract: The invention relates to aqueous polyurethane dispersions with an acid number of 5 to 60 mg KOH/g of the polyurethane solid, a hydroxyl group content of 0.25 to 6.5% by weight and 2 to 25% by weight of urethane groups (calculated as —NH—CO—O—) based on the polyurethane solid.
    Type: Application
    Filed: October 10, 2002
    Publication date: June 26, 2003
    Inventors: Larz Zander, Rainer Hoefer, Ulrich Nagorny, Silvia Sauf