Method for producing electrical cables coated with cross-linked polyethylene
CA 2353639 C · Owner: Strittmatter, Marc · Inventors: Strittmatter, Marc; Danekas, Franz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a method for producing electrical cables coated with cross-linked polyethylene, a polyethylene granulate is mixed with a liquid silane-containing , cross-linking agent, the granulate thus prepared is melted in an extruder and extruded onto the electrical cable and the extruded , coating is cross-linked in the presence of water or steam. A mixture of granular material of a polyethylene homopolymer and a polyethylene copolymer is coated with the cross-linking agent. The copolymer content in the coating on the cable is between 1 and 8% by weight.
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 July 23, 2001 and granted February 15, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 23, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 2023.
- 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.