Patents by Inventor Alexander Joseph Peter Pioli

Alexander Joseph Peter Pioli 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 process
    Patent number: 4056669
    Abstract: Polymerization of ethylene using a transition metal hydrocarbyl complex, especially zirconium tetrabenzyl, supported on alumina consisting of substantially spherical particles having diameters in the range 20-150 .mu.m. The particulate polymer produced by the process contains substantially no "fines" (i.e. particles <100 .mu.m diameter) and has improved pourability.
    Type: Grant
    Filed: July 9, 1973
    Date of Patent: November 1, 1977
    Assignee: Imperial Chemical Industries Limited
    Inventors: Denis George Harold Ballard, Eric Jones, John Christopher Padget, Alexander Joseph Peter Pioli, Peter Anthony Robinson, John Walker, Ronald John Wyatt