Topical compositions for the treatment of skin diseases
CA 2194730 A1 · Owner: Wright, Judith Melanie · Inventors: Wright, Judith Melanie; Taylor, Peter William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition suitable for topical administration in treatment of a hyperproliferative skin disease which is a gel comprising (A) a compound of formula, (see fig.I) (I), wherein A1 and A2 are each independently of the other hydrogen lower alkyl, lower alkenyl, lower alkynyl aryl, acyl, lower alkylsulfonyl or arylsulfonyl; or wherein A1 and A2 together form unsubstituted or lower alkyl- or hydroxysubstituted lower alkylene; Ar1 and Ar2 are each independently of the other aryl heteroaryl or unsubstituted or substituted cycloalkyl; the group -C(=X)- is -C(=O)- -C(=S)-, -CH2- or -C(=CR1R2)- wherein R1 and R2 are each independently of the other hydrogen or lower alkyl; and R is hydrogen lower …
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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 January 9, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 9, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 9, 2019.
- 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.