Pulse oximeter sensor with widened metal strip
CA 2392219 A1 · Owner: Chin, Rodney · Inventors: Chin, Rodney
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pulse oximeter sensor having an opaque metalized layer (16) to shield from , ambient light. The metalized layer (16) surrounds the area of the light detector (32). In one embodiment, the sensor has a transparent portion (12) with the opaque, metalized layer (16) covering only the portions around the light detector (32) and other areas, such as a strip extending between the light detector (32) and the emitter (36). In a preferred embodiment the , opaque, metalized layer (16) is a strip which has a widened portion in the area around the light detector (32).
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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 November 1, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 1, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 1, 2022.
- 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.