Gas dome for a tank
CA 2205258 A1 · Owner: Cornell, Alwin (Dutchy) · Inventors: Cornell, Alwin (Dutchy)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed at an improved tank for containing a fluid having a gas phase and comprising an outer wall and a gas accumulation section. The gas phase accumulates generally upwardly in the gas accumulation section forremoval. The improvement is comprised of a conduit having a first end within thegas accumulation section and a second end extending through the outer wall of the tank at or below the level of the gas accumulation section for directing the gas phase out of the tank. A valve is associated with the second end of the conduit for controlling the release of the gas phase through the second end. Preferably the gas, phase is directed by the conduit from the gas …
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, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 13, 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.