Treatment of ocular hypertension with a synergistic combination for ocular administration
CA 2042972 C · Owner: R-Tech Ueno, Ltd. · Inventors: Ueno, Ryuji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to a pharmaceutical composition for use in the treatment of ocular hypertension comprising an oculo-hypotensively synergistic combination of (a) a 13,14-dihydro-15-keto-20-loweralkylprostaglandin or a pharmaceutically acceptable salt thereof or a pharmaceut-, ically acceptable ester thereof and (b) a polyoxyethylene-, sorbitan unsaturated higher aliphatic acid monoester in association with a pharmaceutically acceptable carrier diluent or excipient.
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 21, 1991 and granted October 15, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 21, 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.