Multilayered pellet comprising ethylene-vinyl alcohol copolymer resin composition
CA 2578024 C · Owner: Kawamura, Syukiti · Inventors: Kawamura, Syukiti
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a multilayered pellet having a core-shell structure, wherein the core of the core-shell structure is made of an ethylene-vinyl alcohol copolymer resin composition (A) and the shell of , the core-shell structure is made of an ethylene-vinyl alcohol copolymer resin composition (B). The ethylene-vinyl alcohol copolymer resin composition (A) constituting the multilayered pellet contains any one of (i) to (iii): (i) an , ethylene-vinyl alcohol copolymer (a) and a modified ethylene-vinyl alcohol copolymer (b); (ii) a modified ethylene-vinyl alcohol copolymer (b); and (iii) an ethylene-vinyl alcohol copolymer (a) and a plasticizer (d). The modified …
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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
- Filed September 2, 2005 and granted April 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 2, 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
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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.