Efficient vapor-liquid mass transfer by microporous membrane fibers
CA 2005959 A1 · Owner: Glassford, Craig L. · Inventors: Glassford, Craig L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for preferably gransferring a gas from a gaseous mixture to liquid absorbent utilizing an array of microporous hollow membrane fibers. The membrane fibers are advantageously woven into a cloth. Layers of membrane fibers are positioned in a gas conduit generally normal to the direction of gas flow arranged in a generally planar array. 36,627-F
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 December 19, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 19, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 19, 2011.
- 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.