Process for the production of aqueous mixed micelle solutions
CA 2029673 C · Owner: Schering Aktiengesellschaft · Inventors: Goritz, Detlef; Michel, Heinrich; Rossling, Georg
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the production of aqueous mixed micelle solutions, containing mixed micelles formed from lipids and salts of bile acids, in which optionally slightly water-soluble or water-insoluble active ingredients are solubilized, is described, which is characterized in that mixtures are prepared from, a) solutions which contain lipids free bile acids and, optionally slightly water-soluble or water-insoluble active ingredients in a water-soluble organic solvent and b) solutions which contain 0.05 to 3 equivalents of bases and optionally isotonized additives and/or water-soluble active ingredients in relation to the bile acids the, organic solvent is removed by ultrafiltration …
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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 9, 1990 and granted September 19, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 9, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 9, 2012.
- 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.