Threshold determination apparatus and method
CA 2075260 A1 · Owner: Clow, Robert J. · Inventors: Clow, Robert J.; Tice, Lee D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method for establishing an alarm threshold for each member of a plurality of detectors or sensors includes storing a value returned from each detector indicative of a clear air condition. A second value returned from each detector indicative of a test condition is stored. The stored values are combined with a common detector characteristic value to produce a unique alarm threshold for each detector. The determined alarm thresholds can be stored for subsequent use. Subsequently, a value returned from a detector indicating a current ambient condition can be compared to that detector's previously determined alarm threshold. If the currently returned value from the detector exceeds …
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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 August 4, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 4, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 4, 2014.
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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.