Dispenser
CA 2117308 A1 · Owner: Camm, James Owen · Inventors: Camm, Stephen John; Camm, James Owen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dispenser is disclosed which includes a container (10) having a base (14), a cylindrical side wall (12) and a lid (32). A piston (24) is arranged within the container between component (20) and an air space (26) between the piston (24) and lid (32). A diaphragm (50) is arranged within the air space (26) and is sealed to the container between a rim (13) of the container and a rim (33) of the lid (32) so that an enclosed volume (60) is defined between the diaphragm (50) and the lid (32). A rod (38) extending between the base and lid and passing through the piston and diaphragm is provided to reinforce the container. The lid (32) includes an air inlet (36) for allowing compressed air to …
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 November 11, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 11, 2014.
- 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.