Patents by Inventor Ian R. Brookes

Ian R. Brookes 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).

  • Process for the chemical dissolution of oxide deposits
    Patent number: 4481040
    Abstract: Oxide deposits containing chromium are dissolved by contacting the deposits sequentially with(i) a permanganate salt in acid solution to remove chromium therefrom as hexavalent chromium;(ii) a reducing agent in acid solution to destroy excess permanganate ions and manganese dioxide formed by reduction of the permanganate; and(iii) a mixture of a reducing agent and complexing acid to dissolve the residual chromium depleted oxide.
    Type: Grant
    Filed: June 10, 1982
    Date of Patent: November 6, 1984
    Assignee: Central Electricity Generating Board of Sudbury House
    Inventors: Ian R. Brookes, Malcolm E. Pick