Intra-rectal pharmaceutical foam compositions
CA 2014889 C · Owner: Procter & Gamble Pharmaceuticals S.A.R.L. · Inventors: Healey, John Norman Charles; Whiteman, Marshall
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pharmaceutical compositions suitable for intra-rectal administration in the form of a foam are described which comprise a therapeutically effective amount of 5-aminosalicylic acid; a pharmaceutically acceptable aqueous carrier therefor, and means for generating a foam. Methods for their preparation and their use in the treatment of ulcerative colitis are also described.
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 April 19, 1990 and granted May 30, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2012.
- 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.