Patents by Inventor Patrick Alan Fletcher

Patrick Alan Fletcher 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).

  • Electrochemical oxidation of matter
    Publication number: 20040050716
    Abstract: In apparatus for decomposing organic waste by oxidation using electrochemically regenerated Ag++, provision is made for preventing unwanted carryover of organic material into recovery streams and into any solid waste produced by the apparatus. Gases formed in the processing are also treated to prevent or minimise any carryover of toxic components in gaseous effluent from the apparatus.
    Type: Application
    Filed: July 30, 2003
    Publication date: March 18, 2004
    Inventors: Christopher Peter Jones, Dominic John Kieran, Linda Jane McCausland, Patrick Alan Fletcher, Patrick Wakefield Nevins, David Frame Steele, Andrew Derek Turner, Stuart Anton Legg
  • Radioactive effluent treatment
    Patent number: 5894077
    Abstract: A radioactive waste stream (12) is of high pH and contains a wide variety of different fission products and also organic materials which act as complexants. Technetium and/or ruthenium are removed by first electrolytically oxidising the organic materials at an anodically stable anode (26), and then electrolytically reducing the technetium and/or ruthenium at a porous fluid-permeable cathode (42). The cathode (42) might for example be of lead wool.
    Type: Grant
    Filed: October 21, 1997
    Date of Patent: April 13, 1999
    Assignee: AEA Technology plc
    Inventors: Christopher Peter Jones, Paul Antony Harry Fennell, Patrick Alan Fletcher