Patents by Inventor Frederick G. N. Cloke

Frederick G. N. Cloke 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).

  • Polymerization catalysts
    Patent number: 5548044
    Abstract: Novel Group IV or V metal complexes comprise cyclooctatetraene ligands. The complexes are suitable for use as catalysts for the polymerisation of olefins and may be supported for use in the gas phase.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 20, 1996
    Assignee: BP Chemicals Limited
    Inventor: Frederick G. N. Cloke
  • Polymerization catalysts
    Patent number: 5536690
    Abstract: Novel Group IV or V metal complexes comprise cyclooctatetraene ligands. The complexes are suitable for use as catalysts for the polymerization of olefins and may be supported for use in the gas phase.
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: July 16, 1996
    Assignee: BP Chemicals Limited
    Inventor: Frederick G. N. Cloke
  • Volatile lanthanum complexes for use in chemical vapor deposition
    Patent number: 4973498
    Abstract: Homoleptic bis (.pi.-arene) yttrium or lanthanide complexes of formula ML.sub.2, wherein M is yttrium or a lanthanide metal and the L ligands are di or trisubstituted benzene derivatives, are provided. Certain of the complexes are volatile and are therefore of interest in the chemical vapor deposition. A process for their manufacture is described.
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: November 27, 1990
    Assignee: The British Petroleum Company p.l.c.
    Inventor: Frederick G. N. Cloke
  • Volatile lanthanum complexes and their uses
    Patent number: 4894446
    Abstract: Homoleptic bis (.pi.-arene) yttrium or lanthanide complexes of formula ML.sub.2, wherein M is yttrium or a lanthanide metal and the L ligands are di or trisubstituted benzene derivatives, are provided. Certain of the complexes are volatile and are therefore of interest in the chemical vapour deposition. A process for their manufacture is described.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: January 16, 1990
    Assignee: The British Petroleum Company p.l.c.
    Inventor: Frederick G. N. Cloke