Useful form of anhydrous paroxetine hydrochloride
CA 2193939 C · Owner: Rey, Allan · Inventors: Rey, Allan; Murthy, K.S. Keshava; Weeratunga, Gamini
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Paroxetine hydrochloride anhydrous designated as Form IV having at least one, some or all of the following characteristics: a) Infrared spectra as shown in Schedules "A" and "B", b) A X-ray powder diffraction pattern as shown in Schedule "C", c) A melting point of between about 80°C to about 95°C, Schedule "C" - Form IV X-Ray Diffractogram (see fig. I)
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 December 24, 1996 and granted February 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 24, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 24, 2018.
- 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.