Transdermal device
CA 2248573 A1 · Owner: Svedman, Pal · Inventors: Svedman, Pal
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a transdermal device suitable for continuous administration of an opiate/opioid analgesic for a period of about 24 to about 144 hours via an area of skin for which the epidermis has been removed. The device has incorporated therein from 11 to 3000 mg of morphine or a salt thereof or from 11/P to 3000/P mg of another opiate/opioid analgesic for which P is the level of analgesic effect of said other opiate/opioid analgesic relative to morphine.
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 March 19, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 19, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 2019.
- 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.