Beverage package and a method of packaging a beverage containing a gas in solution
CA 2036282 A1 · Owner: Bruce, Alexander · Inventors: Purdham, Robert; Osborne, David G.S.M; Harbutt, Richard P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A beverage package and a method of packaging a beverage having gas in solution has a sealed bottle 1 with a primary chamber 9 containing the beverage and forming a primary headspace 20 comprising gas at a pressure greater than atmospheric. A hollow plastics moulded pod 10 forms a secondary chamber 17 which communicates with the beverage 19 by way of a restricted orifice 18. Beverage from the chamber 9 enters the chamber 17 by way of the orifice 18 and when the beverage is in equilibrium a secondary headspace 21 is formed in the insert. Upon opening the bottle 1, the pressure differential between the headspaces 20 and 21 ejects beverage from the insert 10 through orifice 18 to develop froth …
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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 13, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 13, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 2013.
- 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.