A method for the improvement of transport across adaptable semi-permeable barriers
CA 2375157 A1 · Owner: Weiland-Waibel, Andrea · Inventors: Richardsen, Holger; Weiland-Waibel, Andrea; Cevc, Gregor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method, a kit and a device for controlling the flux of penetrants across an adaptable semi-permeable porous barrier the method , comprising the steps of: preparing a formulation by suspending or dispersing said penetrants in a polar liquid in the form of fluid droplets surrounded by a membrane-like coating of one or several layers said coating comprising at , least two kinds of forms of amphiphilic substances with a tendency to aggregate, said penetrants being able to transport agents through the pores of said barrier or to enable agent permeation through the pores of said barrier after penetrants have entered the pores selecting a dose amount of said , …
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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 5, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 5, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 5, 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.