Laminated packaging material
CA 2104870 C · Owner: Kodaira, Hideki · Inventors: Iwase, Hiroshi; Komiya, Yuji; Maro, Hideharu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A laminated wrapping material comprising a base material, a silicon oxide layer, an adhesive layer or an anchorcoat layer, and a heat sealing resin layer that are laminated in that order, wherein said adhesive layer or anchor-coat layer are formed by applying an aqueous adhesive composition or aqueous anchor coating agent composition onto said silicon oxide layer and then drying the same. A solvent-free type adhesive layer may be provided on said anchor-coat layer. A laminated wrapping material comprising a base material, a silicon oxide layer an, ink layer, an adhesive layer and a heat sealing resin layer that are laminated in that order, wherein said ink layer is formed by applying 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 December 28, 1992 and granted December 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 28, 2014.
- 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.