Extrusion method and apparatus for producing a cable
CA 2781168 C · Owner: Prysmian Cavi E Sistemi Energia S.R.L. · Inventors: Belli, Sergio; Veggetti, Paolo; Balconi, Luca
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An extrusion apparatus for producing a cable. The apparatus includes an extrusion head having a male die an intermediate die and a female die; a longitudinal cavity for receiving the core defined in the male die; a pair of feeding channels defined in the extrusion head for depositing by co-extrusion respectively, at least one coating layer of polymeric material and one coating layer of expanded polymeric material; and a plurality of suction channels for sucking gases released during the expansion of the coating layer of expanded polymeric material.
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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 September 3, 2002 and granted January 28, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 3, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 3, 2024.
- 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.