Patents by Inventor Katinka Schipper

Katinka Schipper 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 coating composition comprising a mixture of polyurethane dispersions
    Patent number: 6579932
    Abstract: The present invention relates to an aqueous coating composition comprising: 5-95 wt. % of a polyurethane/acrylate hybrid dispersion and 95-5 wt. % of a dispersion of a polyurethane resin with oxidatively drying groups. Optionally, the coating composition comprises in addition to the above-mentioned dispersions an emulsion of an alkyd resin. The coating composition can be used as a translucent or opaque primer or topcoat or as a clearcoat in decorative applications.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: June 17, 2003
    Assignee: Akzo Nobel N.V.
    Inventors: Katinka Schipper, Rudolf Verbiest, Petrus Johannes Arnoldus Geurink