Patents by Inventor Jochen Wulff

Jochen Wulff 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).

  • Textile coating with polyurethanes
    Patent number: 4116741
    Abstract: This application relates to textile sheets which have been coated with polyurethanes and to a process for coating said textile sheets wherein a solution of polyurethane is applied as a top coat to a release substrate and then a bonding coat is applied before application of the textile material. The polyurethane which is used as a top coat is prepared by reacting a dihydroxyl compound with a molecular weight between about 600 and 4000 and a mixture of at least 2 diols with a molecular weight between 62 and 450 with at least one organic diisocyanate. The invention overcomes the difficulty of the top coat being lifted from the release substrate in numerous areas while other areas remain firmly attached giving the so-called "hoar-frost" effect.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: September 26, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wilhelm Thoma, Jochen Wulff, Georg Niederdellmann
  • Saturated hydroxy polyester urethanes and styrene copolymers
    Patent number: 3970717
    Abstract: The instant invention relates to compositions comprising certain copolymers and/or graft polymers of styrene or .alpha.-methyl styrene in combination with certain polyurethanes useful as adhesives.
    Type: Grant
    Filed: November 11, 1974
    Date of Patent: July 20, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Horst Muller-Albrecht, Bernd Quiring, Manfred Dollhausen, Jochen Wulff