Test tube for determining the erythrocyte sedimentation rate and a surfactant for use therein
CA 2180799 C · Owner: Emin, Jean · Inventors: Dufresne, Christopher; Bonnevial, Georges; Golabek, Robert S. Jr.
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 agent. In order to facilitate mixing of the blood sample a surfactant such as an organo- silicone fluid is provided in the tube (T) as an additive.
Read the whole patent
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 9, 1996 and granted March 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 9, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 9, 2018.
- 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.