Transdermal propentofylline compositions for the treatment of alzheimer's disease
CA 2255580 A1 · Owner: Venkateshwaran, Srinivasan · Inventors: Venkateshwaran, Srinivasan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Patients suffering from Alhzheimer's disease are treated by transdermally administering an effective amount of propentofylline in the form of an occlusive device containing a delivery composition comprising a carrier vehicle having uniformly distributed therein effective amounst of propentofylline and, optionally, a penetration enhancer. The occlusive device may be a matrix type patch in which the carrier vehicle is a pressure sensitive adhesive or a reservoir type patch in which the carrier vehicle is a liquid of controlled viscosity, i.e. a gel wherein the reservoir system , contains means for maintaining it in a propentofylline transferring relationship with the derma when …
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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 August 22, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 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.