Patents by Inventor Roger John Woodward

Roger John Woodward 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).

  • Electrodeionisation apparatus
    Patent number: 7279083
    Abstract: An electrodeionisation apparatus comprising, successively: means defining an anode chamber, means defining one or more anion exchange chambers, means defining one or more mixed exchange chambers, means defining one or more cation exchange chambers, and means defining a cathode chamber, the anion, mixed and cation exchange chambers providing a flow path for water to be purified, is described. The present invention incorporates advantages of both separate resin bed and mixed resin bed technology.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: October 9, 2007
    Assignee: VWS (UK) Ltd
    Inventors: Nigel Philip Emery, Paul Whitehead, Roger John Woodward
  • Electrodeionisation apparatus
    Publication number: 20040035802
    Abstract: An electrodeionisation apparatus comprising, successively: means defining an anode chamber, means defining one or more anion exchange chambers, means defining one or more mixed exchange chambers, means defining one or more cation exchange chambers, and means defining a cathode chamber, the anion, mixed and cation exchange chambers providing a flow path for water to be purified, is described. The present invention incorporates advantages of both separate resin bed and mixed resin bed technology.
    Type: Application
    Filed: July 2, 2003
    Publication date: February 26, 2004
    Inventors: Nigel Philip Emery, Paul Whitehead, Roger John Woodward