Novel steroids
CA 2103924 A1 · Owner: Axelsson, Bengt · Inventors: Thalen, Arne; Axelsson, Bengt; Brattsand, Ralph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of general formula (I) in the form of a 22R and 22S epimer, wherein X1 and X2 are the same or different and each represents a hydrogen atom or a fluorine atom provided that X1, and X2 are not simultaneously a hydrogen atom processes for, their preparation, pharmaceutical preparations containing them and the use of the compounds in the treatment of inflammatory and allergic conditions.
Read the whole patent
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 January 29, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 29, 2014.
- 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.