Process for solubilizing difficultly soluble pharmaceutical actives
CA 2181241 C · Owner: Dhabhar, Dadi Jamshed · Inventors: Dhabhar, Dadi Jamshed
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for improving the solubility of difficultly soluble pharmaceutical actives in a mixture of polyethy1ene glycol and propylene glycol by using a polyvinylpyrrolidone with a specific viscosity average molecular weight of from about 5,000 to about 25,000.
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 January 24, 1995 and granted April 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 2017.
- 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.