Inclusion complex of paclitaxel with 2-hydroxypropyl-beta-cyclodextrin
CA 2467110 C · Owner: Vianex S.A. · Inventors: Kagkadis, Konstantinos Anastasios
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method for producing a 2-hydroxypropyl-betacyclodextrin inclusion complex of taxol said 2-hydroxypropyl-beta-, cyclodextrin having a degree of substitution of 0.4 to about 0.9 wherein the , method comprises admixing the 2-hydroxypropyl-beta-cyclodextrin with taxol at a molar ratio of 1-1000 times with respect to taxol. A second aspect of the invention relates to a method for improving the solubility of taxol said , method comprising: (i) dissolving taxol in ethanol; (ii) dissolving 2hydroxypropyl-beta-cyclodextrin, having a degree of substitution of 0.4 to about 0.9, in water; (iii) admixing the solution from step (i) with the solution from step (ii) …
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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 15, 2002 and granted April 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 15, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 15, 2024.
- 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
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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.