Electrical conductor provided with a surrounding insulation
CA 1329641 C · Owner: Bjorklund, Anders · Inventors: Johansson, Lennart; Bjorklund, Anders; Langberg, Lennart
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrical conductor is provided with an electrical insulation surrounding the conductor, in the form of an organic polymer containing at least 10 per cent by volume of a powdered filler in the form of chromium oxide iron oxide, with an intrinsic resistivity of 104-108 ohm m metal phthalo-, cyanine, or a mixture of at least two substances of these kinds. The filler in superficially located parts of the insulation protects the underlying parts of the insulation against degradation caused by corona. The chromium oxide and metal phthalocyanine preferably have an intrinsic resistivity of 104-108 ohm m and the insulation preferably a resistivity in excess of 1010 ohm m. The conductor may …
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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
- Granted May 17, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 2011.
- 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.