Method for characterization and quality control of porous media
CA 2394221 A1 · Owner: Li, Changming · Inventors: Maracas, George; Choong, Vi-En; Shi, Song
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a method to characterize optimize, and control , the quality and production of hydrogel media. Additionally the present , invention provides a method for determining the size size distribution, and , spatial distribution of the pores of a porous substrate. More particularly the invention provides a method for determining the size size distribution, and spatial distribution of the pores of a polymeric hydrogel-based substrate.
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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 January 5, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 5, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 5, 2023.
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Timeline
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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.