| Patent application number | Description | Published |
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| 20100227552 | Underwater radio antenna - The present invention provides an antenna for underwater radio communications. The antenna of the present invention comprises an elongate section submerged in water and a feed point for feeding electrical signals to the antenna located on the elongate section, the elongate section is attached to an underwater object at a first end thereof, and during deployment hangs downwards there from so that said elongate section is substantially vertical in orientation. A first portion of the elongate section comprises a flexible wire having an electrically conductive core, which is electrically insulated on an outer surface thereof. During operation the flexible wire radiates electromagnetic signals through the water. | 09-09-2010 |
| 20100245120 | SEA VESSEL TAGGING APPARATUS AND SYSTEM - The present invention discloses a tagging and identification device and system for tracking and monitoring sea vessels as they enter sea ports, estuaries and/or other channels. The tagging device of the present invention comprises a receiver, for receiving an underwater electromagnetic signal transmitted by an underwater beacon. An acoustic transmitter is provided for transmitting an identification signal to an acoustic receiver deployed nearby. The acoustic identification signal is transmitted after an electromagnetic trigger signal is received from the underwater beacon. The tagging and device may further comprise a memory device which can store data relating to position and time of the see vessel to which it is attached. The tagging and identification device of the present invention is covert, compact and is capable of extended active deployment without replenishment of batteries etc. The identification tagging device and system of the present invention is capable of being deployed for tracking the location of sea vessels without the knowledge of the vessel crew. The system of the present invention allows third a third party to monitor suspect vessels as they enter specific ports or estuaries. | 09-30-2010 |
| 20100278014 | Underwater synchronisation system - An underwater system ( | 11-04-2010 |
| 20100322293 | COMMUNICATION BETWEEN SUBMERGED STATION AND AIRBORNE VEHICLE - The present invention discloses a system for digitally modulated radio communication directly between a submerged underwater station and an airborne station. Each of the underwater station and the airborne station has or is associated with a radio communications antenna. Suitable radio communications antennas include loop antennas, solenoid antennas, stacked multiple loop antennas, planar arrayed loop antennas, a multiple resonant loop antennas. In some embodiments, the communications antennas of the submerged underwater station and the airborne station are each deployed horizontally thereby improving the efficiency of the signal transfer between the submerged underwater station and the airborne station. | 12-23-2010 |
| 20110133726 | Precision alignment system - The present invention provides a precision alignment system operable to provide alignment of a first and second apparatus. The precision alignment system makes use of inductive coupling between loop antennas in the first and second apparatus. The mechanism for alignment is the detection of a null in the signal induced in the loop antennas of the second apparatus arising from an input signal fed to a loop antenna of the first apparatus. The precision alignment system can be incorporated in a system for the wireless transfer of electrical power or may be incorporated in a system for the transfer of data. The precision alignment system of the present invention is particularly suited to applications where optical or other means for alignment of two apparatus are unreliable. In particular, the alignment system disclosed is suitable for operation underwater. | 06-09-2011 |
| Patent application number | Description | Published |
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| 20090093979 | SCALING FACTOR FOR AN OUTPUT OF AN ELECTROCHEMICAL CELL - A scaling factor for scaling an output of a first electrochemical cell, is determined in order to compensate for the effect on the output caused by an variation in value of a property of a working electrode of the first cell from a reference value of that property. A measured value for the property is obtained from a portion of material formed so as to have substantially the same value of the property as does the working electrode and the measured value is processed to generate the scaling factor. | 04-09-2009 |
| 20090159464 | Electrode preconditioning - An electrochemical sensing method comprising: (a) providing an electrochemical cell having a working electrode and a pseudo reference electrode; (b) providing a sample comprising a metal, the sample being in contact with the working electrode and the metal being capable of being oxidised or reduced at the working electrode when the metal is bound to the working electrode; (c) preconditioning the working electrode by (i) applying a time varying preconditioning potential between the working and pseudo reference electrodes; and/or (ii) baking the working electrode; and/or (iii) air-ageing the working electrode; and (d) applying a measuring potential between the working and pseudo reference electrodes and, during application of said measuring potential, measuring the current generated by oxidation/reduction of the metal at the working electrode. | 06-25-2009 |
| 20090294304 | Electrochemical sensor - A composition suitable for use in an electrochemical detection of ischeamia via albumin cobalt finding test (ACB), said composition comprising (i) a transition metal salt eg. Cobalt; (ii) an electrode area normalising agent having a current which is dependent on electrode area eg. RU (NH | 12-03-2009 |
| 20100140108 | ELECTRODE PRECONDITIONING - A method for improving the precision of electrochemical measurements made using an electrochemical cell is provided. The method comprises preconditioning a working electrode of the cell by (i) baking the working electrode; and/or (ii) incubating the working electrode; and/or (iii) applying a preconditioning potential across the cell; and/or (iv) treating the working electrode with a UV laser. | 06-10-2010 |
