Gas-barrier resin composition
CA 2551936 C · Owner: Kuraray Co. Ltd. · Inventors: Arimoto, Kikuo; Berrier, Arthur Leroy; Moriguchi, Nobuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A resin composition includes a polymer (A) mainly containing a structural unit represented by following Formula (1): (See formula 1) wherein m represents an integer of 2 to 10; X1 and X2 are each hydrogen atom hydroxyl group or a functional group that can be converted into a hydroxyl group wherein at least one of X1 and X2 is hydroxyl group or a functional group that can be converted into hydroxyl group; R1 R2 and R3 are each hydrogen atom, hydroxyl group a functional group that can be converted into hydroxyl group an alkyl group, an aryl group, an aralkyl group or a heteroaryl group wherein the plural R1s may be the same as or different from each other; and a vinyl alcohol polymer (B).
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 6, 2006 and granted October 1, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 6, 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.