Composite having more than one layer
CA 2299589 A1 · Owner: Degussa-Huls Aktiengesellschaft · Inventors: Franzmann, Giselher; Baumann, Franz-Erich; Hager, Harald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermoplastic composite having more than one layer and comprising the following layers:, I. a layer I made from a polyamide molding composition and, II. a layer II made from a polyester molding composition and between these a layer made from an adhesion promoter which comprises at least 50% by weight of a blend made from the following components:, a) from 20 to 80% by weight of a polyamide prepared from, a) diamine having from 6 to 12 carbon atoms and from, an essentially stoichiometrically equivalent amount of dicarboxylic acid, where the dicarboxylic acid comprises at least 5 mol% of a dicarboxylic acid having from 10 to 36 carbon atoms, and also, b) from 80 to 20% by weight of a …
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 February 25, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 25, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 25, 2022.
- 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.