Patents by Inventor Kenneth Clark Kirkwood

Kenneth Clark Kirkwood 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 catalyst
    Patent number: 4087380
    Abstract: Process for preparing a supported Ziegler catalyst by impregnating a magnesium-containing support material with the product of reacting a halogen-containing transition metal compound (other than a fluorine-containing compound) with an aliphatic alcohol under substantially anhydrous conditions. Preferred support materials are magnesium oxide or the product of heating magnesium chloride with silica.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: May 2, 1978
    Assignee: BP Chemicals Limited
    Inventors: David Leslie Hyde, Kenneth Clark Kirkwood
  • Polymerization process
    Patent number: 3970613
    Abstract: Process for polymerizing ethylene or mixtures of ethylene with other 1-olefins by contacting the monomer with a titanium modified catalyst that has been pretreated with a hydrocarbon other than the hydrocarbon used as polymerization diluent.
    Type: Grant
    Filed: March 5, 1975
    Date of Patent: July 20, 1976
    Assignee: BP Chemicals International Limited
    Inventors: Brian Peter Forsyth Goldie, Kenneth Clark Kirkwood, Alan William Lightbody