Artificial kidney and a method of controlling it
CA 2074698 C · Owner: Chevallet, Jacques · Inventors: Chevallet, Jacques
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The artificial kidney comprises:, an exchanger having two compartments separated by a semipermeable membrane, a first compartment being connected to a circuit for conveying a flow of blood outside the body;, a source of sterile liquid suitable for connection either to the circuit for conveying a flow of blood outside the body or else to an inlet to the second compartment of the exchanger; and, control means for connecting the source of sterile liquid either to the inlet of the second compartment of the exchanger or to the circuit for conveying a flow of blood outside the body, as a function of the value of the transmembrane pressure. This kidney provides optimum purification treatment for …
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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 27, 1992 and granted April 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 2014.
- 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.