Polymeric film-based electrochemical sensor apparatus
CA 2118521 A1 · Owner: Miller, Charles B. · Inventors: Liang, Wenbin; Miller, Charles B.; Ribes, Carolyn
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for detecting an ionizable compound or changes in concentration of an ionizable compound by means of a detector assembly containing a substantially inert polymer film acting in an electrolytic capacity, electrodes attached to the polymer film and, apparatus operatively associated with the electrodes for measuring a change in voltage or current in the circuit responsive to the presence of an ionizable compound in an environment in which the film is generally situated or responsive to a change in the concentration of such compound in this environment from a basellin concentration.
Read the whole patent
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 April 15, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 15, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.