Thermoplastic multilayer composites
CA 2114516 C · Owner: Rober, Stefan · Inventors: Feinauer, Roland; Jadamus, Hans; Rober, Stefan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermoplastic multilayer composite material is disclosed. The composite comprises at least a first layer made of a moulding compound base on a polyvinylidene fluoride and a second layer adjacent to the first layer which second layer is, made of a moulding compound based on a mixture of a polyamide and a polyglutarimide. The two layers are adhesively bonded to one another. The composite has an outstanding resistance to and barrier action against diffusion of chemicals solvents and, fuels. Since the layers are adhesively bonded to one another no delamination occurs on thermal expansion or flexing of the finished part. The composite is used in structural parts particularly in electrical, …
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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 January 28, 1994 and granted February 22, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 28, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2016.
- 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.