Inhaler
CA 2084400 C · Owner: Leighton, Ann-Marie · Inventors: Hobbs, Michael Anthony; Leighton, Ann-Marie; Simpkin, Gordon Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An inhaler for inhaling, pulverulent medicament from within a capsule comprises a, chamber (24) within which the capsule is positioned with its, longitudinal axis in the median plane of the chamber and thus, generally parallel to the front (29) and rear walls (30) of the, chamber where the spacing be-, tween said front and rear walls is just greater than the diameter, of the capsule and the diameter of the chamber is larger than, the capsule's length. The device includes pins (21) serving as, opening means to pierce the ends -of the capsule while it is, seated in a recess (25). Air inlets (26), chamber (24) and, mouthpiece (27) are in such a spatial relation as to create a, swirling or …
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 June 14, 1991 and granted May 6, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 14, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 14, 2013.
- 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.