Patents by Inventor Arpad F. Somogyvari

Arpad F. Somogyvari 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).

  • Phosphorus based catalysts for the polymerization of olefins
    Patent number: 6013745
    Abstract: The present invention relates to the polymerization of one or more alpha olefins in the presence of a transition metal catalyst having either a heterobifunctional ligand, having a phosphorus and a nitrogen atom, or a bis-phosphinimine ligand having two nitrogen atoms, in the presence of an activator.
    Type: Grant
    Filed: August 4, 1997
    Date of Patent: January 11, 2000
    Assignee: The Governors of the University of Alberta
    Inventors: Ian McKay, Alison Ciupa, Arpad F. Somogyvari, Beth Lorraine Creed, Alan Rodney Sanger, David John Law, Ronald George Cavell
  • Olefin oligomerization in the presence of novel complexes
    Patent number: 5557023
    Abstract: The present invention relates to the oligomerization of lower alpha olefins, and particularly ethylene, to higher olefins in the presence of a catalyst precursor having either or both of a dithiophosphinate complex and a heterobifunctional ligand having a phosphine center and an imine or similar center, in the presence of an activator. The catalysts have a high reactivity and a good selectivity.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: September 17, 1996
    Assignee: The Governors of the University of Alberta
    Inventors: Arpad F. Somogyvari, Beth L. Creed, Antonio P. Nicola, Alan R. Sanger, David J. Law, Ronald G. Cavell