Patents by Inventor W. Jack Kruper, Jr.

W. Jack Kruper, Jr. 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).

  • Metal complexes containing partially delocalized II-bound groups and addition polymerization catalysts therefrom
    Patent number: 5541349
    Abstract: Novel Group 4 metal complexes wherein the metal is in the +2 or +4 formal oxidation state containing a cyclic or noncyclic, non-aromatic, anionic, dienyl ligand group bound to M and having a bridged ligand structure, catalytic derivatives of such complexes including novel zwitterionic complexes; and the use thereof as catalysts for polymerizing addition polymerizable monomers are disclosed.
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: July 30, 1996
    Assignee: The Dow Chemical Company
    Inventors: David R. Wilson, David R. Neithamer, Peter N. Nickias, W. Jack Kruper, Jr.
  • Metal (III) complexes containing conjugated, non-aromatic anionic II-bound groups and addition polymerization catalysts therefrom
    Patent number: 5495036
    Abstract: Novel Group 4, Group 3 or Lanthanide metal complexes wherein the metal is in the +3 formal oxidation state containing a cyclic or non-cyclic, nonaromatic, anionic, dienyl ligand group bound to M and having a bridged ligand structure, catalytic derivatives of such complexes; and the use thereof as catalysts for polymerizing addition polymerizable monomers are disclosed.
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: February 27, 1996
    Assignee: The Dow Chemical Company
    Inventors: David R. Wilson, David R. Neithamer, Peter N. Nickias, W. Jack Kruper, Jr.