Topical gel composition containing a combination of a nsaid and a xanthine derivative
CA 2258199 A1 · Owner: The Procter & Gamble Company · Inventors: Riahi, Francois; Leeves, Nigel John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Topical gel composition comprising: (a) from about 0.1 % to about 10 % by weight of a non-steroidal anti-inflammatory drug selected from a propionic acid derivative, acetic acid derivative fenamic acid derivative, biphenylcarboxylic acid derivative and an oxicam and salts thereof, and , mixtures thereof; (b) from about 0.1 % to about 10 % by weight of xanthine derivative having general formula (I), wherein R1 R2 and R3 are each , independently selected from a hydrogen atom a methyl or ethyl group, and at , least two of R1 R2 and R3 are methyl or ethyl groups, or mixtures thereof: (c) from about 0.5 % to about 10 % by weight of gelling agent; (d) from about 5 % to about 60 % by weight …
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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 June 24, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 24, 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.