Composite container including a tab-cut label layer, and method and apparatus for forming the same
CA 1072794 A · Owner: Boise Cascade Corporation · Inventors: Thornhill, Dewey B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A one-step easy-open composite container for dough products and the like, together with a method and apparatus for forming the same, are disclosed, which composite container includes a fibrous body wall layer having an unbonded helical butt joint an impervious, inner liner layer that is folded to define an expansible folded portion that extends helically the length of the container opposite the helical butt joint, an outer label layer wound helically in adhesively-bonded relation upon the body wall across the butt, joint, and at least one end closure member closing one end of the body wall-label laminate, characterized in that the overlapping edge of the outer label layer is precut--prior …
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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
- Granted March 4, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 4, 1997.
- 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.