Expired Canadian patentCanada
Device for use with metered dose inhalers (mdis)
CA 2295589 C · Owner: Leith, Frank A. · Inventors: Leith, Frank A.; Casper, Robert A.; Gardner, David L.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An inhalation device (10) is provided for use with MDIs (14). The device includes a mechanical mechanism to apply force to discharge the MDI and a , breath activated trigger (28).
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 July 29, 1997 and granted July 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 29, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 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.
FiledJuly 29, 1997
GrantedJuly 2, 2002
Term endedJuly 29, 2017
Patent numberCA 2295589 C
Classification (IPC)A61M11/00 +1 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.