Adaptive filter flow control system and method
CA 2084890 C · Owner: Baxter International Inc. · Inventors: Callaway, William D.; Prince, Paul R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An adaptive filter concentrate flow control system and method includes a filter system (12), a pumping system (14) driving feed fluid, concentrate and filtrate flowing through the filter system (12) and a flow control system (18) controlling the pumping system (14) to maintain optimum filtrage flow rates or minimum feed flow rates along a control surface (102) in a three dimensional transmembrane pressure (feed fluid rate) filtrate flow rate space: Actual sensed operating point data is used to locate the control surface (102) so as to assure an optimized filtrate flow rate or minimized feed flow rate at which reversible blocking of the membrane has begun to occur without irreversible …
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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 9, 1991 and granted October 3, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 9, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 9, 2013.
- 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.