Breath monitoring apparatus
CA 2270809 A1 · Owner: Koppel, Ronald · Inventors: Koppel, Ronald; Kirchmeier, Edwin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for measuring the concentration of a human breath constituent, such as alcohol, comprises a hand-held housing having an internal breath passageway with a first end through a nozzle mounted to the housing. A sensor module for detecting the constituent is mounted in the housing and provides an output signal corresponding to the presence of the constituent to be sensed. A pressure transducer is coupled to the passageway for measuring the pressure therein to allow the validity of the breath sample to be determined. A sonic signalling element is also mounted in the housing for generation of indicator sounds perceptible outside the housing to provide the user with feedback regarding …
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 30, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 30, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2021.
- 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.