Patents by Inventor Paul F. X. Hackett

Paul F. X. Hackett 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 hydrogen fluoride
    Patent number: 4144315
    Abstract: Hydrogen Fluoride is manufactured from fluorosilicic acid. The fluorosilicic acid is reacted with ammonia to produce aqueous ammonium fluoride and solid silica. The ammonium fluoride is hydrolised in the presence of a mixture of ammonium fluoride and ammonium bifluoride, and the net production of ammonium bifluoride is converted to sodium bifluoride. The sodium bifluoride is decomposed by heating to hydrogen fluoride gas.
    Type: Grant
    Filed: August 15, 1977
    Date of Patent: March 13, 1979
    Assignee: Goulding Chemicals Limited
    Inventors: Ralph E. Worthington, Padraic S. O'Neill, Paul F. X. Hackett