Packaging roll stock with windows
CA 2869788 C · Owner: Genpak Lp · Inventors: Valy, Andrew F.; Coutts, David A.; Pattenden, Andrew G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for manufacturing a laminate is disclosed. The laminate is for forming a package having one or more windows for viewing the contents of said package. The process comprises the step of extrusion laminating onto a first material perforated by a hole for and defining each of said windows a heat-sealable second material. A laminate produced by the process is also disclosed. A heat-sealed package produced with the laminate is also disclosed.
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 July 12, 2006 and granted July 5, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 12, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.