Water still and method of operation thereof
CA 2378231 C · Owner: Young, Mark Andrew · Inventors: Young, Mark Andrew; Tonkin, Mark Christopher; Eckert, Neil David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mechanical water still (10) includes an imprevious dome-like upper surface (12) and a membrane base (14) that is coupled (26) to the imprevious dome-like structure (12) to form, when inflated, a chamber (20). The membrane base (14) supports a water pervaporation process therethrough. A water collection well (16) has an opening into which water droplets condensed from the water pervaporation process collect. The water collection well (16) is sited within the membrane base (14) and generally extends outwardly and downwardly from the membrane base (14), as shown (in fig.1). In use a contaminated water source , (24) is brought into ideally, complete contact with the membrane base (14) …
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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 August 3, 2000 and granted April 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 3, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 3, 2022.
- 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.