Method for obtaining a natural mixture of conjugated equine oestrogens depleted in non-conjugated lipophilic compounds
CA 2498095 C · Owner: Mueller, Hans-Joerg · Inventors: Mueller, Hans-Joerg; Wachsmann, Stefan; Ban, Ivan
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 for extracting an extract which contains , the natural mixture of conjugated equine estrogens by the liquid-liquid , extraction of the mixture of conjugated equine estrogens. The extracted mixture is depleted of non-conjugated lipophilic compounds from the group consisting of non-conjugated flavonoids non-conjugated isoflavonoids, non-, conjugated norisoprenoids non-conjugated steroids, particularly androstane and pregnane steroids, and comparable non-conjugated compounds.
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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 October 8, 2003 and granted December 16, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 8, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 2025.
- 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.