Film fill-pack for inducement of spiraling gas flow in heat and mass transfer contact apparatus with self-spacing fill-sheets
CA 2290497 C · Owner: Baltimore Aircoil Company, Incorporated · Inventors: Ferrari, Sarah L.; Carter, Thomas P.; Garrish, Bryan F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A film fill-pack has a plurality of fill-sheets with an ordered array of ridges and grooves. generally extending above a planar surface on both the obverse and reverse surfaces of a fill-sheet which fill-sheets at an assembled state provide the ridges and grooves of facing obverse and reverse surfaces of adjacent fill-sheets in an arrangement providing a plurality of channels between adjacent fill-sheets for gas flow therethrough and where the ordered arrangement of ridges and grooves induces spiraling of the gas flow through the channels for promotion of improved heat transfer; and where the fill-sheets further include a spacing arrangement providing a compact nesting of adjacent sheets …
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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 November 25, 1999 and granted September 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2021.
- 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.