Noncontact active temperature sensor
CA 2180736 A1 · Owner: Fraden, Jacob · Inventors: Fraden, Jacob
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A noncontact active infrared sensor (1) for measuring the temperature of a remote object is provided with bifurcated sensing elements (6, 7). A first element (6) is uniquely exposed to the remote object thereby, establishing a radiative flux. A second element (7) is configured in the same local environment as that of the first element (6) but isolated from radiation from the remote object. The heat transfer of both elements (6 7), is compared and that component of heat transfer corresponding to flux with the remote object is isolated and converted into a temperature signal. The sensor system advantageously incorporates individual thermal control units (34, 38) onto both sensor elements (6 …
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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 December 19, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 19, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 19, 2016.
- 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.