Reinforced container and method of making
CA 1250554 A · Owner: Walnut Industries, Inc. · Inventors: Sykes, Harry P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Reinforced corrugated cartons on the order of 35 to 50 inches in height and somewhat greater in length and width are provided with an inside tubular rectangular liner and a bottom pad fitted down inside the liner and adhesively secured to the inside bottom flaps of the carton. Disposed entirely peripherally around the carton sidewalls or the tubular liner and extending upward for a distance from substantially the bottom thereof on the outside is a belt of non-woven backing material with yarns laminated thereon and extending peripherally laterally completely therearound. The yarns may be of any material which exhibits minimal elongation under tension. The belt backing material may typically …
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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 February 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 28, 2006.
- 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.