Device for moisture exchange between gas flows
CA 2540674 C · Owner: Siverklev, Johan · Inventors: Siverklev, Johan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Device for exchange of moisture, between at least two counter-current gas flows (A, B), comprising a generally closed chamber having an inlet and an outlet for a first , gas flow (B), such that the first gas flow flows in a first direction from the inlet to the , outlet inside the chamber; and at least one duct which extends inside the , chamber, generally in parallel with the first direction which duct is arranged to , conduct a second fluid flow (A) in an opposite direction to the first direction and which duct , comprises a duct wall material with high permeability to water. In order to enhance , the efficiency of the moisture exchange the device comprises an inlet space for the , …
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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 October 1, 2004 and granted June 5, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 1, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 2026.
- 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.