Transdermal composition
CA 2065134 A1 · Owner: Szekely, Anna · Inventors: Szego, Andras; Magyar, Kalman; Szekely, Anna
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns an anhydrous transdermal preparation comprising in a 20-100 % lyotropic liquid crystalline arrangement, 5-15 w.% of optically active or racemic N-methyl-N- -(phenyl-2-propyl)-2-propinylamine or, N-methyl-(1-(4-fluoro-phenyl)-2-propyl)-2- -propylamine or their therapeutically suitable salts, 40-70 w.% of liquid polyoxiethylene 10-20 w % of solid polyoxiethylene, 2-30 w.% of a nonionic surface active agent 2-20 w.% of propyleneglycol, if desired 0.5-2 w.% of a polymer the a value of which is > 0.6 and if desired in a quantity needed to 100 w.% other auxili-, ary agents.
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 April 3, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 3, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 3, 2014.
- 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.