Apparatus for assaying viscosity changes in fluid samples and method of conducting same
CA 2175228 C · Owner: Zelin, Michael P. · Inventors: Lauks, Imants R.; Zelin, Michael P.; Davis, Graham
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an apparatus for conducting a variety of assays that are responsive to a change in the viscosity of a sample fluid and relates to methods of conducting such assays. In particular, the present invention is related to the use of a cartridge (10) for conducting one or more coagulation assays or, conversely, fibrinolysis assays. In particular (1) represents, a conductivity sensor, sample flow channel (2) reagent chamber, (3), sample chamber (5) sealable sample port (6), and a diaphragm (7) which applies pressure to move the sample through the flow channels.
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 September 30, 1994 and granted May 14, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 30, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 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.