Israel Aircraft Industries Ltd.

Mordechai Gelchinski

Simon Girshovich

William Reginiano

The present invention provides a method for determining whether or not moisture appeared in a hidden place during a period T, the method comprising: (i) introducing to the hidden place a moisture sensitive element; the moisture sensitive element comprising: a) a dielectric substrate coated or impregnated with an intrinsically conducting polymer and b) probes connecting the substrate to a resistance meter; (ii) measuring and recording the electrical resistance of the substrate at two or more times during the period T; (iii) determining whether or not moisture appeared in the hidden place during the period T according to the changes in the electrical resistance of the moisture sensitive element that occurred during period T. The present invention further provides method and system for alerting against a possible appearance of corrosion in a hidden place, a moisture sensor for use in the method or system, and a method for producing a substrate comprised in such a moisture sensor.

Method for detecting hidden corrosion and a sensor for use in the same

The invention provides a dynamic electrolytic reactor for the reduction of Cr to Cr in aqueous solution. The reactor comprises at least one pair of liquid permeable anode and cathode connectable to an electric current supply. The cathode according to the invention is three-dimensional, and comprises a substrate of flexible porous material whose inner and outer surfaces are coated with an electrically conductive carbon black powder embedded in a binder.

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Ramat Gan, Israel

Mordechai Gelchinski