Patents Examined by John M. Codney, Jr.
  • Compressed, rigid polyurethane foams
    Patent number: 6472449
    Abstract: Compressed polyurethane or polyisocyanurate foams useful as support materials for vacuum insulation units are produced by compressing an open-cell rigid polyurethane or polyisocyanurate to 5-95% of its original volume after 80-200% of the fiber time.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: October 29, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Torsten Heinemann, Karl-Werner Dietrich, Walter Klän