Patents by Inventor Detlef Symietz

Detlef Symietz 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).

  • Polyurethane reactive composition
    Patent number: 6965008
    Abstract: The invention relates to a polyurethane reactive composition comprising an isocyanate, an isocyanate reactive polymeric compound and a catalyst for the reaction of the isocyanate with the isocyanate reactive compound. The isocyanate reactive compound is a diol or a higher functional polyol of a polyester, of a polyester polyurethane, of a polycarbonate or of a mixture thereof, the polyester being derived from a hydroxy carboxylic acid or from its corresponding lactone, and the catalyst is a sterically hindered bismuth compound.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: November 15, 2005
    Assignee: Dow Global Technologies Inc.
    Inventors: Detlef Symietz, Daniel Schneider, Paul Rohrer
  • Polyurethane reactive composition
    Publication number: 20050137376
    Abstract: The invention relates to a polyurethane reactive composition comprising an isocyanate, an isocyanate reactive polymeric compound and a catalyst for the reaction of the isocyanate with the isocyanate reactive compound. The isocyanate reactive compound is a diol or a higher functional polyol of a polyester, of a polyester polyurethane, of a polycarbonate or of a mixture thereof, the polyester being derived from a hydroxy carboxylic acid or from its corresponding lactone, and the catalyst is a sterically hindered bismuth compound.
    Type: Application
    Filed: December 22, 2003
    Publication date: June 23, 2005
    Inventors: Detlef Symietz, Daniel Schneider, Paul Rohrer
  • Adhesive containing zinc powder
    Patent number: 4507421
    Abstract: A novel sealant composition particularly suitable for use in spot welding operations. The novel sealant composition comprises thermoplastic synthetic polymeric material and an amount of finely divided zinc up to about 15 percent by weight of the composition.
    Type: Grant
    Filed: January 23, 1984
    Date of Patent: March 26, 1985
    Assignee: USM Corporation
    Inventor: Detlef Symietz