Pull-top can
CA 2201075 A1 · Owner: Kagawa, Seiji · Inventors: Kagawa, Seiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pull-top can protect the contents from the material of the body and lid without impairing the opening properties of the pull-top mechanism attached to the lid, and maintain the quality of the contents such as beverages, beer, and any other seafood for a long period of time. A pull-top can includes a body having an open top and an inner surface laminated with an organic resin film, and an aluminum lid caulked at the cut-open portion of the body and having a pull-top mechanism. The inner surface of the lid on the body side is laminated with a porous organic resin film having a large number of small through pores by an adhesive layer sandwiched between the inner surface of the lid and the …
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 March 26, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 26, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 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.