Dextrochlorpheniramine tannate
CA 2412463 A1 · Owner: Mellozzi, Angelo R. · Inventors: Mellozzi, Angelo R.; Redkar, Sham N.; Chopdekar, Vilas M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention pertains to a novel composition comprising dextrochlorpheniramine tannate and to a method for preparing such tannate by reacting, dextrochlorpheniramine free base at a temperature of about 60 to about 150°C with tannic, acid preferably neat or as an aqueous slurry containing about 5 to about 30 wt.% water. The dextrochlorpheniramine tannate has extended release properties and is useful in, pharmaceutical compositions as an antihistamine for human beings.
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 25, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 25, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2024.
- 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.