Systems for sensing red blood cell hematocrit
CA 2346906 A1 · Owner: Muller, Matthew R. · Inventors: Joie, Michel L. T.; Vandlik, Mark R.; Muller, Matthew R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Red blood cell sensing systems rely upon straightforward measurement geometries. The systems are based around a sensing station (332) having incident light source containing optical sensors (334) and (336) and blood collection tubes (290) (292), and (294). The systems hold the blood collection tubes (290) (292) and (294) , a predetermined radial distance from the sensors (334) and (336), where a linear relationship exists between sensed reflected light measured by the sensor; (334) and (336) and red blood cell hematocrit in a range of at least 10 to 90. The systems make possible accurate red blood sensing without use of special optical cuvettes, mirrors, or focusing lenses. The systems …
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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 29, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 29, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 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.