Liquid pharmaceutical composition for piperidinoalkanol derivatives
CA 2008183 C · Owner: Merrell Dow Pharmaceuticals (Canada) Inc. · Inventors: Knipstein, Richard A.; Byers, Deanne L.; Kristof, Joseph C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a liquid pharmaceutical composition comprising (a) a piperidinoalkanol in an amount of from about 2 to about 25 mM; (b) a suitable buffer, selected from the group consisting of gluconic acid buffer, lactic acid buffer citric acid buffer and acetic acid buffer in an amount of, from about 0.001 to about 0.5 M; and (c) water in an amount of from about 5% to about 99% by weight of the composition.
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 19, 1990 and granted July 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 19, 2012.
- 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.