Patents by Inventor George D. Robertson

George D. Robertson 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).

  • Ion exchange membrane for dissolved gas sensor
    Patent number: 6391174
    Abstract: An ion exchange membrane for use in sensors which measure dissolved gases. Disclosed is a method for using ion exchangers in gas permeable membranes to maintain optimal conditions in the electrolyte contained within the sensor. This can greatly extend the lifetime and improve the stability relative to sensors of similar size and electrolyte volume that have been constructed using prior art.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: May 21, 2002
    Assignee: RhoCraft Research and Development Ltd.
    Inventors: Robert D. Rowe, Thomas M. Fyles, George D. Robertson