Tool and method for separating water in organic solvent containing water dispersed therein
CA 2508575 A1 · Owner: Wako Pure Chemical Ind. Ltd. · Inventors: Inoue, Kunihisa; David, Godwin Cork
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tool for use in separating water in an organic solvent containing water dispersed therein, characterized in that it is a cylindrical article having a membrane capable of separating water on a rising face thereof from the lower end to the upper end; and a method for separating water in an organic solvent containing water dispersed therein which comprises filtrating the organic solvent through the water separating membrane of the above tool to thereby , pass the organic solvent through the membrane with the separation of the water. The tool and the method allows the separation of water in an organic solvent, without the absorption of the objective material present in the solvent or …
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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 28, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 2025.
- 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.