Rhocraft Research and Development Ltd.

University of Victoria Innovation and Development Corporation

Robert D Rowe

Thomas M Fyles

George D Robertson

An exemplary apparatus includes one or more 'communicators' that are worn, carried by, or otherwise associated with a person or location in an environment. Each communicator includes a synchronizable clock and a transmitter configured to transmit a message including a respective time stamp that is based on a time determined by the synchronizable clock. The message can be transmitted acoustically or in another manner such as by RF signal, optical signal, etc. The clock can be synchronized based on, e.g., a standard clock, another synchronizable clock associated with one or more transceivers, or a selected transceiver. The time stamp can be digital or analog, and can be configured to permit estimation of distance and bearing between synchronized communicators.

Apparatus and methods for determining range and bearing using time-stamped messaging

This patent discloses the use of poly-substituted isothiouronium salts (T1 where R , R , R , R &equals;hydrogen, alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, heteroaryl, etc. and X &equals;Cl , Br , NO , CH CO , or any other common anion), poly-substituted guanidinium salts (G1 where R , R , R , R , R &equals;hydrogen, alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, heteroaryl,etc. and X &equals;Cl , Br , NO , CH CO , or any other common anion), or mixtures of two or more of the above compounds, as the biocidal component of microbiocidal or antifouling formulations.

Microbiocidal properties of poy-substituted guanidinium salts

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.

Growing community of inventors

Victoria, Canada

Robert D Rowe