Expired Canadian patentCanada
Powdered pharmaceutical formulations having improved dispersibility
CA 2218074 C · Owner: Inhale Therapeutic Systems · Inventors: Foster, Linda; Eljamal, Mohammed; Patton, John S.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dispersibility of a respirable powder, administrable by inhalation is , increased by including a pharmaceutically acceptable watersoluble polypeptide.
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 April 15, 1996 and granted October 8, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 15, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 15, 1996
GrantedOctober 8, 2002
Term endedApril 15, 2016
Patent numberCA 2218074 C
Classification (IPC)A61K47/42 +2 more
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.