Composition, process for producing the same and multi-layer structure
CA 1292219 C · Owner: Moritani, Tohei · Inventors: Moritani, Tohei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition comprises a matrix of an ethylene-vinyl alcohol copolymer having dispersed therein a drying agent in a particulate state, among grains of which drying agent a volume-area average diameter of the grains having a long diameter of not less than 10 µ is not greater than 30 µ. A multi-layer structure comprises layers of such a composition. Gas barrier property of the multi-layer structure is substantially scarecely reduced after a retort treatment and thus the multi-layer, structure is extremely useful for packaging of food especially, packaging of retorted food.
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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 November 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 19, 2008.
- 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.