Patents by Inventor Frank Wingerter

Frank Wingerter 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).

  • Dendritic and highly branched polyurethanes
    Patent number: 6376637
    Abstract: In a process for preparing dendritic or highly branched polyurethanes by reacting diisocyanates and/or polyisocyanates with compounds containing at least two groups which are reactive toward isocyanates, at least one of the reactants contains functional groups having a different reactivity compared to the other reactant and the reaction conditions are selected so that only certain reactive groups react with one another in each reaction step.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: April 23, 2002
    Assignee: BASF Corporation
    Inventors: Bernd Bruchmann, Ulrike Ehe, Frank Wingerter, Konrad Stiefenhöfer, Ulrich Treuling
  • Highly functionalized polyurethanes
    Patent number: 5981684
    Abstract: The invention relates to highly functionalized polyurethanes which are synthesized from molecules containing the functional groups A(B).sub.n, where A is an NCO group or a group reactive with an NCO group, B is an NCO group or a group reactive with an NCO group, A is reactive with B and n is a positive number and is at least equal to 2.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: November 9, 1999
    Assignee: Basf Aktiengesellschaft
    Inventors: Bernd Bruchmann, Frank Wingerter, Hermann Graf, Stefan Wolff