Fluid presence and qualitative measurements by transient immitivity response
CA 2477594 A1 · Owner: Sampson, Allen R. · Inventors: Davis, Robert E.; Sampson, Allen R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for obtaining a measurement of various qualities of an electrochemical cell (12). The apparatus includes first (9) and second (10) electrodes and an excitation source (8) for providing a time varying excitation voltage to the first electrode (9). The excitation voltage (8) is switched between two voltage levels with the first and second voltages alternately applied to the first electrode for predetermined times. An external capacitance (Cout) is connected between the second electrode (10) and ground. The apparatus is capable of determining the time related rates at which electrical charge is transferred from the first electrode (9) to charge the external …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed November 18, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 18, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 2024.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.