Method for preparing organic, in particular lithocholic acid, nanotubes and uses thereof
CA 2453427 A1 · Owner: Commissariat A L'Energie Atomique · Inventors: Terech, Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for preparing organic nanotubes in aqueous medium comprising the following steps: a) preparing a basic aqueous solution having a pH of 10 to 14 preferably 12 to 13.5; b) adding to the solution a compound of formula (I) wherein: R?1¿ is a polycyclic radical with condensed C¿17?-C¿20? rings optionally comprising alkyl substituents; R?2¿ is a linear or branched C¿3?-C¿20? alkylene group; and R?3¿ represents a hydrogen atom a C¿1?-C¿20? alkyl group or a C¿6?-C¿30? aromatic group; and c) stirring the solution for a time interval sufficient to form stable tubules of the organic compound in the solution. The organic compound may be lithocholic acid.
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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 June 21, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 21, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 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.