Patents by Inventor Geoffrey N. Quinton

Geoffrey N. Quinton 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).

  • Phosphoric acid production
    Patent number: 4136151
    Abstract: The filtration rate and/or washability of crystals of gypsum produced during the wet process for the production of phosphoric acid are improved by adjusting the notional Al.sub.2 O.sub.3 :P.sub.2 O.sub.5 and reactive SiO.sub.2 :F ratios of the phosphate rock to within certain ranges. The adjustment may be achieved by addition of sources of aluminium and silica to the phosphoric acid process.
    Type: Grant
    Filed: August 15, 1977
    Date of Patent: January 23, 1979
    Assignee: Fisons Limited
    Inventors: Thomas N. Beaumont, Norman Robinson, Geoffrey N. Quinton