Patents by Inventor Nicholas P. Wilkinson

Nicholas P. Wilkinson 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).

  • Method of separating metals from catalyst material
    Patent number: 5084092
    Abstract: A method of separating metals from carbon-supported catalyst materials comprises the steps of combusting the carbon at a temperature insufficient to cause volatisation of the metal followed by reduction with hydrogen of any oxidised metal and washing with acid or water.
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: January 28, 1992
    Assignee: The British Petroleum Company p.l.c.
    Inventors: David A. Campbell, Nicholas P. Wilkinson
  • Catalysts and their use in ammonia production
    Patent number: 4600571
    Abstract: Catalysts as prepared by impregnating a carbon support with a halogen-containing compound of Ru, reducing the Ru to metal with hydrogen, and then depositing an alkali metal and a barium compound. The catalysts may be used for ammonia production.
    Type: Grant
    Filed: March 7, 1984
    Date of Patent: July 15, 1986
    Assignee: The British Petroleum Company p.l.c.
    Inventors: John J. McCarroll, Stephen R. Tennison, Nicholas P. Wilkinson
  • Olefin polymerization catalyst, process and polyolefin product
    Patent number: 4333851
    Abstract: A supported Ziegler catalyst prepared by reacting, under substantially anhydrous conditions, a refractory oxide support material having acidic surface hydroxyl groups, e.g. silica, and an organo metallic compound, e.g. a trialkyl aluminium compound, separating any unreacted organo metallic compound and impregnating the solid product with a halogen-containing titanium compound and a halogen-containing vanadium compound. The catalyst, preferably together with a conventional Ziegler catalyst activator, e.g. an aliminium alkyl, is employed to polymerize 1-olefins, for example ethylene.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: June 8, 1982
    Assignees: BP Chemicals Limited, The University of Nottingham
    Inventors: John G. Speakman, Nicholas P. Wilkinson