Valve
CA 2366958 A1 · Owner: Anderson, Gregor John Mclennan · Inventors: Anderson, Gregor John Mclennan; Russell, David Joseph; Godfrey, James William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a valve for an aerosol container. The valve comprises a valve body (1), within the valve body (1) a sealing ring (112) and receivable , by the sealing ring (112) a valve stem (108) having a dispensing passage (10 11). The valve stem (108) is slidably movable within the sealing ring (112) from a valve-closed position to a valve-open position in which the interior of the valve body is in communication with the dispensing passage (10 11). The , sealing ring (112) is shaped such as to reduce the contact area between the sealing ring (112) and the valve stem (108). Preferably the valve is a , metering valve.
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 February 23, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 23, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 23, 2022.
- 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.