Pervaporation vessel and method
CA 2128909 A1 · Owner: Texaco Development Corporation · Inventors: Tuohey, David; Bartels, Craig Roger; Shah, Vatsal Mukundlal
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PERVAPORATION VESSEL, D#79,895-F), ABSTRACT OF THE DISCLOSURE Apparatus for breaking or separating a liquid mixture or emulsion having two or more components. The apparatus includes a closed vessel having one or more sequentially connected filtering compartments holding a filtering element such as a membrane assembly capable of achieving a multi-stage pervaporation to separate out a vaporous component of the solution. The apparatus further includes a bypass facility which interconnects adjacent filtering compartments. To compensate for the loss of heat energy during the vaporization segments, the residual liquid solution is bypassed into a second vaporization phase, the bypass facility …
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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 July 27, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 27, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 2016.
- 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.