Patents by Inventor Use Schumann

Use Schumann 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).

  • Moisture-curing polyurethane-based hot-melt compositions
    Patent number: 5091444
    Abstract: A moisture-curing hot-melt composition comprising at least one isocyanate-terminated polyurethane prepolymer has improved sag-resistance while retaining high extrudability and is characterised in that the composition includes 1-17 wt %, preferably 3-6 wt %, of hydrophobic, siloxane-coated, fumed silica.Especially effective polyurethane hot-melt adhesive compositions are prepared containing 4-5 wt % of the hydrophobic, siloxane-coated fumed silica.
    Type: Grant
    Filed: February 12, 1990
    Date of Patent: February 25, 1992
    Assignee: Bostik, Inc.
    Inventors: Herbert Bauer, Heinz G. Gilch, Walter Rath, Use Schumann