Patents by Inventor Helmut Kaehs

Helmut Kaehs 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).

  • Aqueous dispersions containing polyurethanes with carbodiimide groups
    Patent number: 6395824
    Abstract: Aqueous dispersions comprising a polyurethane which comprises carbodiimide structural units of the formula (I) —N═C═N—  (I).
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: May 28, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Kuno Beutler, Karl Häberle, Rainer Hummerich, Ulrike Licht, Nicolas Kokel, Reinhard Treiber, Helmut Kaehs, Ralf Mossbach, Thomas Götz
  • Packaging films coated with polyurethane
    Patent number: 5756170
    Abstract: Packaging films are coated with a polyurethane which bears hydrophilic groups which make the polyurethane water-dispersible and which has a melting point of from 20.degree. to 70.degree. C., with the enthalpy of fusion in this temperature range being at least 20 J/g.
    Type: Grant
    Filed: April 15, 1996
    Date of Patent: May 26, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrike Licht, Hermann Seyffer, Jens Rieger, Helmut Kaehs, Rainer Hummerich