Patents by Inventor Erik Hofmann

Erik Hofmann 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).

  • Stabilizer composition
    Patent number: 6908956
    Abstract: A description is given of a stabilizer composition comprising A) at least one nitrogen compound having a molecular weight of at least 150, selected from a secondary amine in which all substituents positioned ? to the amine nitrogen atom are different than hydrogen, or, derived from the secondary amine, a tertiary amine, hydroxylamine, alkoxyamine or amide; and B) at least one iron compound. The stabilizer composition optionally comprises nitroxyl radicals. It is suitable for stabilizing nonliving organic material, especially polyolefins or homopolymers or copolymers of styrene, against the effects of light, heat or oxygen.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: June 21, 2005
    Assignee: Basf Aktiengesellschaft
    Inventors: Heinz Friedrich Sutoris, Sylke Haremza, Hubert Trauth, Erik Hofmann, Manfred Appel
  • Stabilized metallocene polyolefins
    Publication number: 20040138350
    Abstract: Stabilized thermoplastic molding compositions comprising
    Type: Application
    Filed: November 12, 2003
    Publication date: July 15, 2004
    Inventors: Sylke Haremza, Manfred Appel, Hubert Trauth, Erik Hofmann, Alban Glaser