Multilayer thermoplastic composites
CA 2066383 C · Owner: Muegge, Joachim · Inventors: Ohm, Hubertus; Gerth, Christian; Muegge, Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multilayer thermoplastic composite comprising at least one layer made from a polyamide-based moulding composition at least one layer made of a polyester-based moulding composition and an adhesion promoter between the two layers is disclosed. The adhesion promoter comprises a polyamide a polyester or a, mixture thereof. The composite combines the good rigidity excellent barrier action and high temperature resistance of polyesters with the good mechanical properties of polyamides. The composites of the invention are useful fox manufacturing structural components, for example in electrical machine and, automotive industries. They may also be used as films in, particular as foodstuff …
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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 April 16, 1992 and granted March 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 16, 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.