Patents by Inventor Birgit Drees

Birgit Drees 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).

  • Two-component polyurethane hot-melt adhesive with high initial and final strength
    Patent number: 10087349
    Abstract: A two-pack polyurethane adhesive for semi-structural and structural adhesive bonds which are applied in melt form and have a high handling strength wherein the two-pack polyurethane adhesive includes a first pack A containing at least one polyester A1 which is solid at room temperature and at least one polyol A2 having a hydroxyl group functionality greater than 2.0, and a second pack B containing polyurethane prepolymers having isocyanate groups.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: October 2, 2018
    Assignee: Evonik Degussa GmbH
    Inventors: Gabriele Brenner, Birgit Drees, Christina Cron, Kerstin Fuchs
  • Two-Component Polyurethane Hot-Melt Adhesive With High Initial And Final Strength
    Publication number: 20170233622
    Abstract: A two-pack polyurethane adhesive for semi-structural and structural adhesive bonds which are applied in melt form and have a high handling strength wherein the two-pack polyurethane adhesive includes a first pack A containing at least one polyester A1 which is solid at room temperature and at least one polyol A2 having a hydroxyl group functionality greater than 2.0, and a second pack B containing polyurethane prepolymers having isocyanate groups.
    Type: Application
    Filed: August 17, 2015
    Publication date: August 17, 2017
    Inventors: Gabriele Brenner, Birgit Drees, Christina Cron, Kerstin Fuchs