Fluid dispenser
CA 2256008 A1 · Owner: Astrazeneca Ab · Inventors: Von Schuckmann, Alfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a dispenser (G) for fluids (1) especially medicated , fluids, from a mouthpiece aperture (2) connected to a fluid supply by the manual operation of a piston-cylinder device (4) which releases the manual , control only after an overload threshold (Ü) has been exceeded. The dispenser has a user-friendly construction and provides the supply of a powerful spray of fluid by means of a lower spring return force related to the overload threshold in the piston-cylinder device (4) in the form of a pump (P).
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 May 28, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 28, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 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.
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.