Patents by Inventor Robert Chalmers Pitkethly

Robert Chalmers Pitkethly 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).

  • Production of acid hydrocarbon conversion catalysts
    Patent number: 3975299
    Abstract: A process for the production of a solid acidic catalyst which process comprises reacting a compound of formula XF.sub.5 wherein X is phophorus, arsenic, antimony, bismuth, tantalum, vanadium or niobium with an inorganic oxide containing surface hydroxyl groups and having an Ho valve of less than -3.0. In a preferred embodiment alumina is partially fluorinated or sulphonated prior to reaction with the compound XF.sub.5, in which X is preferably antimony.
    Type: Grant
    Filed: June 10, 1974
    Date of Patent: August 17, 1976
    Assignee: The British Petroleum Company Limited
    Inventors: Elizabeth Anne Crathorne, Ian Valentine Howell, Robert Chalmers Pitkethly