21-acetals and mixed acetals of steroidal 21-aldehydes, intermediates and methods of preparation
CA 1073449 A · Owner: Syntex (U.S.A.) Llc. · Inventors: Kertesz, Denis J.; Marx, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
21-ACETALS AND MIXED ACETALS OF STEROIDAL 21- ALDEHYDES,INTERMEDIATES AND METHODS OF PREPARATION, Abstract of the Disclosure 21-acetals and mixed acetals of steroids of the corticoid series are prepared from the corresponding 21hydroxy steroids and have utility as anti-inflammatory agents.
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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 March 11, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 11, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.