Carton blank, carton and method of forming carton
CA 1047997 A · Owner: Nolex Corporation · Inventors: Matovich, Mitchel J. (Jr.)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A one-piece blank which may be formed into a liquid-tight carton is T shaped and is comprised of side wall panels integrally interconnected and numbering three or more to provide a carton of polygonal cross section. One of the side wall panels has integrally connected carton end closure panels to be folded down upon and sealed to sealing tabs of the other side panels after the blank has been formed by a side-seam operation into an open-ended tube. The end closure panels are of substantially the same area as. the cross-sectional area of the carton but are not provided with sealing flaps. They are embossed marginally around their free edges to provide a curvature …
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
- Granted February 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 6, 1996.
- 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.