Patents by Inventor Ian Keith Hook

Ian Keith Hook 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).

  • Distributed temperature sensor using optical reflectometry
    Patent number: 7350972
    Abstract: A temperature sensing method in which pulses of optical radiation are launched by a laser diode (11) into an optical fibre (14) and optical radiation backscattered from the fibre is detected, the method comprising passing the backscattered radiation through a single optical filter (15) whereby a first signal is recorded at the anti-Stokes Raman wavelength from a signal launched by the laser diode in a laser mode and a second signal is recorded at the Rayleigh wavelength from a signal launched by the laser diode in a light emitting diode mode, and a comparison is made of the two signals to provide an indication of temperature.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: April 1, 2008
    Inventors: Peter John Seebacher, Ian Keith Hook, Paul Randall Stoddart