System and method for quality assurance of a biosensor test strip
CA 3097983 C · Owner: F. Hoffmann-La Roche Ag · Inventors: Celentano, Michael J.; Moore, Steven K.; Pauley, James L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a method for measuring a parasitic impedance of at least one trace of a biosensor test strip. The biosensor test strip comprises (i) a working electrode (ii) a working electrode trace, (iii) a working sense trace (iv) a counter electrode, (v) a counter electrode trace; and (vi) a counter sense trace. The method comprises (a) selectively placing a resistor in series with the working sense trace and working electrode trace to form a circuit having an impedance comprising the known impedance of the resistor and a working sense trace impedance and a working electrode trace impedance (b) selectively applying a stimulus to produce a current passing through the series circuit (c) …
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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 June 20, 2005 and granted July 26, 2022. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 20, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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
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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.