Transdermal administration of n-(2,5-disubstituted phenyl)-n'-(3-substituted phenyl)-n'-methyl guanidines
CA 2384986 A1 · Owner: Van Osdol, William W. · Inventors: Van Osdol, William W.; Brandwein, David H.; Sunram, Joan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Composition of matter for application to a body surface or membrane to administer a N-(2,5-Disubstituted phenyl)-N'-(3-substituted phenyl)-N'-methyl guanidine by permeation through the body surface or membrane the composition , comprising the guanidine compound to be administered at a therapeutically , effective rate, optionally in combination with a permeation enhancer or mixture. Also disclosed are drug delivery devices and methods for the transdermal administration of a guanidine for the prevention of neuropathic pain, neuropsychological deficits resulting from cardiac surgery (CABG) and , other neurological disorders.
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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 September 8, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 8, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 8, 2022.
- 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.