Multilayer polymeric coextruded slabs and structural shapes and process for obtaining them
CA 1292349 C · Owner: Biglione, Gianfranco · Inventors: Fasulo, Gian Claudio; Biglione, Gianfranco
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
MN.3450, MULTILAYER POLYMERIC COEXTRUDED SLABS AND STRUCTURAL SHAPES AND, PROCESS FOR OBTAINING THEM ABSTRACT OF DISCLOSURE, Multilayer polymeric coextruded slabs and structural shapes obtained by contemporaneous extrusion of different polymers in a single extrusion head wherein at least one of the different layers consists of a lamina of a vinyl-aromatic polymer containing up to 20% by weight of an ethylenically unsaturated nitrile. The present invention relates to multilayer polymeric coextruded slabs and structural shapes and to the process for obtaining them. More particularly, the present invention relates to multilayer polymeric coextruded slabs and structural shapes wherein the …
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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
- Granted November 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 26, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.