Bimodal liquid chromatography pump employing artificial intelligence logic feedback control
CA 2198907 C · Owner: Wolze, David A. · Inventors: Wolze, David A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Flowrate in a liquid chromatography precision pump (100) employs a digital control system (128) with artificial intelligence (150). In a default flow mode, pump motor speed is controlled without using real-time pressure feedback, which speed in a pressure mode is controlled using the pump system pressure point. Pressure mode is commanded by the artificial intelligence (150) when constant displacement flow measurement time is within a desired threshold and when the higher pressure piston (34a or 34B) which is used as a , constant displacement flow measurement reference is being measured. Flow mode , pressure ripple is minimized by monitoring pressure points and commanding motor (18) …
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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 August 2, 1995 and granted February 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 2, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 2, 2017.
- 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.