Dry powder inhalation apparatus
CA 2540580 C · Owner: Norton Healthcare Limited · Inventors: Barney, Brian; Striebig, Rachel; O'Leary, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to dry powder inhalation apparatus usually operable by breath of a user which provides for controlled and smooth transfer of medicament during multiple actuations by a user. A mechanism of the apparatus for achieving this controlled and smooth transfer includes a device (4) normally held adjacent a reservoir for receiving medicament in a cup or receptacle (15) and which is generally movable transversely of a longitudinal axis of the apparatus to delivery channels of the apparatus. This bodily shifting of the device (4) is achieved by a yoke acting on an abutment (16) thereof. Spillage of medicament in the apparatus is avoided.
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 October 2, 2004 and granted March 20, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 2, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2026.
- 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.