Formation and anion-exchange of crystalline echinocandin ammonium salts
CA 2362826 A1 · Owner: Larsen, Samuel Dean · Inventors: Dotlich, Michael Anthony; Larsen, Samuel Dean; Van Den Berghe Snorek, Sharon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is described for forming a crystalline Echinocandin nucleus salt from its mixed broth and/or partially purified process streams by the steps of nanofiltration to form a concentrate, addition of an aldehyde derivatizing agent which interacts with an aldehyde impurity addition of an acid/metal salt to , form a solubilized echinocandin nucleus salt having the desired anion and , subsequent cooling of the mixture to crystallize the salt.
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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 March 2, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 2, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 2, 2022.
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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.