Patents by Inventor Jürgen Ramthun

Jürgen Ramthun 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).

  • Reactive polyurethane hotmelts with large PSA range
    Patent number: 7268183
    Abstract: Reactive polyurethane hotmelts comprising crystallizing polyesterpolyols based on fumaric acid and 1,6-hexanediol. These hotmelts exhibit good pressure-sensitive adhesive (PSA) properties over a very broad temperature range. The reactive polyurethane hotmelts are prepared by mixing a polyol mixture containing at least on crystallizing polyesterpolyol with an excess of polyisocyanates.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: September 11, 2007
    Assignee: Bayer MaterialScience AG
    Inventors: Matthias Wintermantel, Hermann Perrey, Christian Wamprecht, Walter Meckel, Jürgen Ramthun
  • Solar modules with a transparent polyurethane front side and a process for producing same
    Patent number: 7049803
    Abstract: Solar modules in which the front side is composed of transparent polyurethane are made by RIM, injection molding and casting processes and combinations thereof.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: May 23, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl-Heinz Dörner, Hubert Ehbing, Christian Hässler, Jürgen Ramthun, Gunther Stollwerck, Robert Eiben, Michael Niedermeyer, Peter Schuster