Ophthalmic compositions containing a divalent salt and a non steroidal anti-inflammatory drugs as a precipitate
CA 2290546 A1 · Owner: Roy, Samir · Inventors: Memarzadeh, Eric B.; Pfeiffer, James F.; Bowman, Lyle M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ophthalmic composition containing a divalent salt and a non-steroidal antiinflammatory agent as a precipitate. The composition reduces or eliminates the risk of stinging and burning the eye from topical application. Additionally a preservative system comprising a perborate salt a polyphosphonic acid peroxy , stabilizer and EDTA provides stable preservation of a variety of aqueous ophthalmic compositions.
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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 May 22, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 22, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 22, 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.