Patents by Inventor Stefan K. Friedrich

Stefan K. Friedrich 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).

  • Catalyst compositions and processes for olefin polymers and copolymers
    Patent number: 6576779
    Abstract: The present invention is directed to certain novel late transition metal salicylaldimine chelates and, further, to novel bidentate ligand compounds of substituted salicylaldimine, and their utility as polymerization catalysts alone or in combination with adjunct agent and/or Lewis base in processes of polymerizing olefin monomers and copolymerizing olefin monomers with functionalized olefin monomers.
    Type: Grant
    Filed: May 10, 2000
    Date of Patent: June 10, 2003
    Assignee: Cryovac, Inc.
    Inventors: Donald Albert Bansleben, Stefan K. Friedrich, Todd Ross Younkin, Robert Howard Grubbs, Chunming Wang, Robert Tan Li
  • Catalyst compositions and processes for olefin oligomerization and polymerization
    Patent number: 6573345
    Abstract: The present invention is directed to processes of polymerizing olefin monomers and copolymerizing olefin monomer(s) with functionalized alpha-olefin monomers in the presence of certain late transition metal pyrrolaldimine chelates, especially bidenate or in the presence of a combination of a transition metal in its zero valence and a pyrrolaldimine represented by the formula: wherein each R1, R2, R3, R4, R5, R6, M and L are defined in the specification herein below.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: June 3, 2003
    Assignee: Cryovac, Inc.
    Inventors: Donald Albert Bansleben, Stefan K. Friedrich, Todd Ross Younkin, Robert Howard Grubbs, Chunming Wang, Robert Tan Li
  • Catalyst compositions and processes for olefin polymers and copolymers
    Patent number: 6410664
    Abstract: The present invention is directed to processes of polymerization of olefins and copolymerization of olefins and functionalized olefins in the presence of certain late transition metal bidentate salicylaldimine chelates represented by the formula: wherein each of the symbols R, R1, R2, R3, R4, R5, R6, L, M, A, X and z are defined within the specification herein below.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: June 25, 2002
    Assignee: Cryovac, Inc.
    Inventors: Donald Albert Bansleben, Stefan K. Friedrich, Todd Ross Younkin, Robert Howard Grubbs, Chunming Wang, Robert Tan Li