Flat stack permeator
CA 2024974 A1 · Owner: Camano, Manuel Enrico · Inventors: Camano, Manuel Enrico; Thompson, John Arthur
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is a flat stack permeator useful under dialysis, ultrafiltration reverse, osmosis, perstraction, pervaporation etc. conditions. The permeator comprises a multitude of membrane layer alternately separated by feed-retentate spacers and permeate spacers. The layers are secured along their edges so as to define separate feed-retentate zones and permeate zone. The edge gluing is performed so that in any given layer the two parallel edges are secured, while on the layers immediately above and below the edge pairs which are secured are 90° out of register with the previously mentioned pair of secured edges. In that way alternate feed retentate and permeate zones are defined …
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 10, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2012.
- 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.