Multilayer insulated wire and a manufacturing method therefor
CA 2109336 C · Owner: Kobayashi, Isamu · Inventors: Higashiura, Atsushi; Sano, Fumikazu; Kobayashi, Isamu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provided is a multilayer insulated wire comprising a conductor and three or more insulating layers covering the conductor in which each of first and second insulating layers as counted from the conductor side, is (a) an extrusion-coating layer of an intimate resin mixture compounded so that an ethylene-based copolymer having a carboxylic acid or a metal salt of the carboxylic acid on the side chain thereof accounts for 5 to 40 parts by weight compared to 100 parts by weight of a thermoplastic straight- chain polyester resin (b) an extrusion-coating layer consisting mainly of a thermoplastic straight-chain polyester resin formed by combining an acid constituent and an alcoholic constituent …
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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 October 27, 1993 and granted January 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 27, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 27, 2015.
- 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
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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.