Multilayer structure
CA 2601024 C · Owner: Uchida, Koichi · Inventors: Yamashita, Takashi; Uchida, Koichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provision of a multilayer structure superior in the alcohol gasoline permeation-preventing property interlayer , adhesiveness, low temperature impact resistance heat , resistance and chemical resistance. A multilayer structure comprising at least two layers of layer A consisting of a polyamide resin composition (a) comprising 30 - 90 mass% of a polyamide resin (X) comprising a dicarboxylic acid unit comprising 50 - 100 mol% of a terephthalic acid unit and/or a naphthalene dicarboxylic acid unit, and a diamine unit comprising 60 - 100 mol% of an aliphatic diamine unit having 9 - 13 carbon atoms, and 70 - 10 mass% of an impact resistance modifier, and layer B consisting of a …
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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 March 30, 2006 and granted December 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 30, 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.