Patents by Inventor Matthias Hefner

Matthias Hefner 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).

  • Composite elements containing polyisocyanate polyaddition products
    Patent number: 7914880
    Abstract: The invention relates to composite elements comprising the following laminar structure: (i) 2 to 20 mm metal; (ii) 10 to 100 mm polyisocyanate polyaddition products having a density ranging from 350 to 1050 kg/m3 that can be obtained by reacting (a) isocyanates with (b) compounds, which are reactive to isocyanates, in the presence of (f) expanding agents, and; (iii) 2 to 20 mm metal.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: March 29, 2011
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz Forster, Matthias Hefner, Georg Knoblauch, Jürgen Mertes, Peter Reinerth, Thomas Sandbank, Edmund Stadler
  • Composite element containing polyisocyanate polyaddition products
    Publication number: 20040038042
    Abstract: The invention relates to composite elements having a structure comprising the following layers: (i) between 2 and 20 mm of metal, (ii) between 10 and 300 mm of polyisocyanate polyaddition products which can be obtained by reacting (a) isocyanates with (b) polymer polyols, as compounds which react with ioscyanates, and (iii) between 2 and 20 mm of metal.
    Type: Application
    Filed: May 13, 2003
    Publication date: February 26, 2004
    Inventors: Edmund Stadler, Jurgen Mertes, Heinz Forster, Matthias Hefner, Peter Reinerth, Thomas Sandbank
  • Composite elements containing polyisocyanate polyadditon products
    Publication number: 20030148080
    Abstract: The invention relates to composite elements comprising the following laminar structure: (i) 2 to 20 mm metal; (ii) 10 to 100 mm polyisocyanate polyaddition products having a density ranging from 350 to 1050 kg/m3 that can be obtained by reacting (a) isocyanates with (b) compounds, which are reactive to isocyanates, in the presence of (f) expanding agents, and; (iii) 2 to 20 mm metal.
    Type: Application
    Filed: February 20, 2003
    Publication date: August 7, 2003
    Inventors: Heinz Forster, Matthias Hefner, Georg Knoblauch, J?uuml;rgen Mertes, Peter Reinerth, Thomas Sandbank, Edmund Stadler
  • Composite elements comprising polyisocyanate polyaddition products
    Publication number: 20020081439
    Abstract: The invention relates to composite elements which have the following layer structure:
    Type: Application
    Filed: December 13, 2001
    Publication date: June 27, 2002
    Inventors: Heinz Forster, Matthias Hefner, Georg Knoblauch, Jurgen Mertes, Peter Reinerth, Thomas Sandbank, Edmund Stadler