Amorphous paroxetine composition
CA 2304594 A1 · Owner: Ronsen, Bruce · Inventors: Ronsen, Bruce; El-Rashidy, Ragab
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A free-flowing, amorphous paroxetine hydrochloride composition suitable as a therapeutic agent for premature ejaculation can be prepared by dissolving paroxetine free base in a hydrochloric acid-ethanol solution followed by drying. The present compositions comprise amorphous paroxetine hydrochloride and at least one hydroxyl-bearing compound. In one preferred embodiment the , hydroxyl-bearing compound is ethanol and the amount of ethanol present in the amorphous product is in the range of 1 to 4 weight percent based on paroxetine hydrochloride. The amorphous product is stable and substantially nonhygroscopic.
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 September 30, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2020.
- 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.