Fluid detection device
CA 2237456 A1 · Owner: Worsfold, Jonathan Peter · Inventors: Worsfold, Jonathan Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device 10 for detecting gas leaks comprises a housing 12 having an inlet 16 and an outlet 18. Located in the housing 12 between the inlet 16 and the outlet 18 is a valve member 20 which is movable between a first position in which gas can pass from the inlet 16 towards the outlet 18 and a second position in which the gas is diverted through a flowmeter 28 mounted on the housing 12 before reaching the outlet 18.
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 13, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 13, 2020.
- 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.