Can end
CA 2305578 A1 · Owner: Spurcourt Limited · Inventors: Callewaert, George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A can end comprising : a) a disc-shaped panel (2) having a peripheral edge to be engaged with a rim of a can body, the panel having a frangible area; and b) a stay-on type lift tab (3) provided on the panel (2) and having a pull-up end and an opposed end arranged to bear on the frangible area; and c) a seal member (20) attached to the panel, the attachment (22) being between the frangible area and the peripheral edge such that the seal member (20) covers the frangible area and the lift tab (3).
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 October 1, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 1, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 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.