Volatile signature detector and associated methods
CA 2442506 C · Owner: Centre National De La Recherche Scientifique · Inventors: Clement, Jean-Luc; Farnarier, Francoise; Marquis, Florence
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a detector (D) for detecting the volatile signature of one or more substances e.g. alcohol and/or cannabis, on the breath (MG) of a consumer (P) using several sensors (CT1, CT2, CT3). Said sensors can comprise semiconductors or conductive polymers. The inventive detector is equipped with a filter (F) to remove nuisance substances e.g. water vapour, which mask the signature. The detector is advantageously portable and can be used to perform a test to evaluate (E) the consumption of a substance by the driver of a motor vehicle in relation to a reference level (N). A network of formal neurones (RN) is used to generate a database (BD) that is used to calibrate the …
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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 March 27, 2002 and granted May 1, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 2024.
- 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.