A method and apparatus for determining the erythrocyte sedimentation rate
CA 2181634 C · Owner: Bonnevial, Georges · Inventors: Bonnevial, Georges; Dufresne, Christopher; Emin, Jean
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an improved method for measuring the erythrocyte sedimentation rate (ESR) a pre-evacuated test tube (T) is used to collect a blood specimen. The tube (T) ismade of a material such as glass or plastics and con tains an anticoagulant/mixing agent. For testing the tube (T) is put into a rack (1) and loaded into an instrument which mixes the specimen briefly. An optical sensor (3) is used to record the loca- tion of the blood/air meniscus at initial time. At subsequent time intervals thereafter for periods up to 20 minutes or less the optical sensor (3) identifies and measures the location of the cell/plasma interface (I) within an observation window constituting a minor portion of the …
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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 July 19, 1996 and granted December 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 19, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 2018.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.