Powder inhalator
CA 2694183 C · Owner: Nishibayashi, Toru · Inventors: Sato, Tetsuya; Nishibayashi, Toru; Adachi, Shintaro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A powder inhalator comprising: a housing; a supply member for holding a powdered drug for a large number of doses and having a drug discharge aperture at its bottom surface; a drug carrier to which the powdered drug is supplied from the drug discharge aperture of the supply member and having on its upper surface a measuring recess that has a volume equivalent to one dose of the drug; and an operation member disposed so as to move freely back and forth and operate the drug carrier; the drug carrier moving in contact with the bottom surface of the supply member to carry the powdered drug loaded into the measuring recess from the position of the drug discharge aperture to an air inhalation …
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 8, 2003 and granted June 25, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 8, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 2025.
- 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.