Discrete hydrophilic-hydrophobic porous materials and methods for making the same
CA 2467643 A1 · Owner: Greene, George W. Iv · Inventors: Greene, George W. Iv; Mao, Guoqiang; Coppola, Richard J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to porous polymeric materials having discrete regions that exhibit distinct surface properties. The invention also relates to methods of making such porous polymeric materials and their applications. The geography of the discrete regions can be determined in a selective and controlled manner. Porous materials having discrete regions of distinct hydrophilicity, hydrophobicity, oleophobicity biological molecules binding , capability wetting and wicking property, presence or density of functional groups, chemical reactivity, electric charges porosity and pore sizes can be , manufactured using this invention.
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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 20, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 20, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2024.
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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.