Method and device for controlling the integrity of membrane filtration units
CA 2456064 A1 · Owner: Roux, Jean-Pierre · Inventors: Savall, Vincent; Roux, Jean-Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method of controlling the integrity of hollow fibre filtration units and of detecting leaks through a wholly or partially ruptured fibre. The inventive method is characterised in that it consists in: - emitting a noise or audible signal using an emitter located on one side of the membranes of the filtration units; - detecting the noise or audible signal emerging from a ruptured fibre on the other side of the membranes regardless of whether or not a fluid is passing through said fibre; - amplifying the signal-noise thus obtained; - and comparing the resulting amplified signal to a threshold noise level in the same frequency range.
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 3, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 3, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 2024.
- 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.