Beverage can end with reduced material requirements
CA 2068787 A1 · Owner: Krause, Arthur A. · Inventors: Krause, Arthur A.; Krause, Arthur A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An end wall for beverage containers in which the end wall, has a center section extending across its width and reduced, thickness side sections on opposite sides of the center section thereby enabling the end wall to be manufactured with less material than is required in conventional end wall constructions. The center section is of the same thickness as used in conventional container end walls, and is able to support a pull tab and associated pull ring, while at the same time reinforcing the end wall. The reduced thickness side sections are only about one-half as thick as the center section and all shaping, to produce the reduced thickness is performed on the top surface of the end wall, so …
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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 May 15, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 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.