Cohesive coating for snack food packaging
CA 2556466 C · Owner: Bostik, Inc. · Inventors: Story, Harold G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A water based, cold seal, cohesive coating for bonding one or more substrates together to form a flexible package to contain an article especially useful , for snack food packaging. The cohesive coating includes about 25% to about 90% by weight of a natural rubber latex emulsion about 10% to about 75% by weight , of a non-self-crosslinking acrylic emulsion about 0.01% to about 10% by , weight water and one or more ingredient selected from an anti-foam agent ammonia, a surfactant, an anti-blocking agent an inert filler, and a , conditioning agent so that in combination the components total 100% by weight of the composition. The use of a non-self-crosslinking acrylic emulsion provides an …
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 February 11, 2005 and granted July 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 11, 2025.
- 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.