3,17.beta.-ESTRIOL DIESTERS, PROCESSES FOR THEIR PRODUCTION, AND PHARMACEUTICAL PREPARATIONS CONTAINING THEM
CA 1285274 C · Owner: Schering Aktiengesellschaft · Inventors: Laurent, Henry; Bittler, Dieter; Beier, Sybille
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Estriol esters of Formula I (I) , Wherein R, in each case, means the residue of a monocarboxylic acid of 1-10 carbon atoms. The estriol esters surpass esteriol in strength and duration of estrogen effect and are useful as substitutes for estrogens in the treatment of postmenopausal women suffering from climateric deficiency symptoms such as hot flashes, osteoporosis, atorphy of skin and genitals.
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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
- Granted June 25, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2008.
- 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.