Aminosteroids for ophthalmic use
CA 2085245 A1 · Owner: Chandrasekaran, Santosh Kumar · Inventors: Bowman, Lyle M.; Babcock, John C.; Polansky, Jon R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods and compositions for preventing or treating ophthalmic diseases or disorders wherein an ophthalmically effective amount of the C20 through C26 aminosteroids of formula (XI) and their pharmaceutical, acceptable salts, hydrates or solvates is administered in an inert vehicle to arrest oxidation processes damaging to the eye.
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 May 17, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 17, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 17, 2013.
- 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.