Improved insulation compositions containing metallocene polymers
CA 2491013 C · Owner: General Cable Technologies Corporation · Inventors: Easter, Mark R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel antioxidant systems for metallocene based filled cable insulation are disclosed. These antioxidant systems provide excellent protection against thermal degradation, better cure state and reduced dissipation factor after prolonged heat exposure. The antioxidants consist of mixtures of hindered amine light stabilizers or sterically hindered amine light stabilizers and amine antioxidants.
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 22, 2003 and granted May 22, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 22, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 2025.
- 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.