Strippable semi-conductive insulation shield
CA 2528850 C · Owner: Union Carbide Corporation · Inventors: Pang, Kawai P.; Person, Timothy J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Swellable nano-particles, such as layered nano-particles which are treated or , contacted with one or more swelling agents such as a surfactant, improves the , thermal stability of insulation shield in power cables and also permits the use of low levels of NBR and vinyl-acetate EVA copolymers in such insulation shield.
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 June 8, 2004 and granted May 1, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 8, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 2026.
- 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.