Patents by Inventor Uwe Kirchgaessner

Uwe Kirchgaessner 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).

  • Resin solution for the impregnation of paper webs
    Patent number: 5306783
    Abstract: An aqueous resin solution for the impregnation of paper webs contains 2-40 parts by weight of a polyurea composed of urea and of a polyamine per 100 parts by weight of a melamine/formaldehyde precondensate. The impregnated paper webs are suitable for coating woodbase materials, especially chipboard.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: April 26, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Uwe Kirchgaessner, Jakob Decher, Christof Jaeckh, Otto Wittmann, Manfred Niessner, Harro Petersen