Pharmaceutical ion exchange resin composition
CA 2002492 A1 · Owner: Norman, Alison A. · Inventors: Buxton, Ian R.; Malkowska, Sandra T. A.; Prater, Derek A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ion exchange resin composition which is readily dispersible in water is provided. This resin composition comprises a granulated ion exchange resin, a pharmacologically active ingredient bound thereto with a sugar or sugar alcohol and a sufficient amount, of water, alcohol or aqueous alcohol to facilitate granulation. The invention further comprises a method for the preparation of such ion exchange resin composition.
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 November 8, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 8, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 2011.
- 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.