Transdermal, acetylsalicylic acid-containing therapeutic system with reinforced resorption
CA 2277366 A1 · Owner: Lts Lohmann Therapie-Systeme Ag · Inventors: Murphy, Theresa Maria; Hoffmann, Gerd; Kindel, Heinrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A transdermal, acetylsalicylic acid-containing therapeutic system has a substantially active substance- and humidity-impervious backing layer an , active substance reservoir and if required a detachable protecting layer. This transdermal therapeutic system is characterised by a limonene and dimethyl isosorbide content in a mixing ratio of at least 50 g limonene for 50 g dimethyl isosorbide in the area of the active substance.
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 3, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 3, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 3, 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.