Pharmaceutical compositions and devices for their administration
CA 2273835 A1 · Owner: Lindahl, Ake · Inventors: Lindahl, Ake; Goodman, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for providing pharmaceutical doses comprising a container filled , with a pharmaceutical composition including a pharmaceutically active agent in a solution of liquified 1,1,1,2-tetrafluoroethane (HFC-134a) or 1,1,1,2,3,3,3-, heptafluoropropane (HFC-227) and a carrier. The carrier can be a pharmaceutically acceptable alcohol, polyol (poly)alkoxy derivative, fatty , acid alkyl ester polyalkylene glycol, or dimethyl sulphoxide. The device includes valve means arranged for delivering aerosol doses of said pharmaceutical composition to the exterior of the container and at least a , portion of the device is formed from a polyester.
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 December 4, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 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.