Patents by Inventor Joel Hoffstetter

Joel Hoffstetter 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).

  • Process for producing di-or trifunctional initiator systems based on lithium and their use
    Publication number: 20020022704
    Abstract: The present invention relates to an improved process for producing di- or trifunctional initiator systems based on lithium and their use for the polymerization of conjugated dienes, in particular for the copolymerization of conjugated dienes with aromatic vinyl compounds.
    Type: Application
    Filed: July 24, 2001
    Publication date: February 21, 2002
    Inventors: Ellen Giebeler, Pierre Lutz, Joel Hoffstetter