Patents by Inventor Neil Bette Graham

Neil Bette Graham 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).

  • Apparatus for detecting aqueous environments
    Patent number: 5744794
    Abstract: A system for detecting the presence of a target measurand, such as water or specified chemicals which are carried in an aqueous solution, and which includes a fibre-optic probe assembly which incorporates an optical fibre, a thin film of a water swellable hydrogel, and a rigid containment structure. The hydrogel is in contact with the optical fibre such that a volumetric change in the hydrogel causes a microbend of the optical fiber. The microbend is detected by a sensor assembly which is coupled to the probe assembly.
    Type: Grant
    Filed: December 13, 1995
    Date of Patent: April 28, 1998
    Assignee: University of Strathclyde
    Inventors: Walter Craig Michie, Neil Bette Graham, Brian Culshaw, Peter Thomas Gardiner, Christopher Raymond Moran