Ophthalmic ointment composition comprising a drug, an ointment base and a solubilizing/dispersing agent
CA 2492989 C · Owner: Wong, Michelle Pik-Han · Inventors: Bizec, Jean-Claude; Babiole Saunier, Maggy; Schoch, Christian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a semisolid ophthalmic composition in particular an , ointment, comprising (1) an ophthalmic drug e. g. a staurosporine derivative, (2) an ointment base and (3) an agent for dispersing and/or dissolving said drug in the ointment base, selected from a polyethylene-glycol) a , polyethoxylated castor oil, an alcohol having 12 to 20 carbon atoms and a mixture of two or more of said components.
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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 July 22, 2003 and granted November 20, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 22, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 2025.
- 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.