Patents by Inventor Willhelm Laufer

Willhelm Laufer 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).

  • Patent number: 8354492
    Abstract: The present invention relates to a system comprising a) at least one catalyst for the anionic polymerization of lactams, and b) at least one activator for the anionic polymerization of lactams, wherein the at least one activator is a cyclic isocyanate, at least one allophanate or a mixture thereof.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: January 15, 2013
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Bernd Kray, Andreas Kugler, Willhelm Laufer, Peter Schuster, Volker Wenzel
  • Publication number: 20090306332
    Abstract: The present invention relates to a system comprising a) at least one catalyst for the anionic polymerization of lactams, and b) at least one activator for the anionic polymerization of lactams, wherein the at least one activator is a cyclic isocyanate, at least one allophanate or a mixture thereof.
    Type: Application
    Filed: February 17, 2009
    Publication date: December 10, 2009
    Applicant: RHEIN CHEMIE RHEINAU GMBH
    Inventors: Bernd Kray, Andreas Kugler, Willhelm Laufer, Peter Schuster, Volker Wenzel