Insulated wire for high-temperature environment
CA 2027553 C · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Inazawa, Shinji; Sawada, Kazuo; Yamada, Kouichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An insulated electrical wire is suitable for use as a distribution wire, a wire for winding coils and for, other electrical purposes. The wire can be used in a highvacuum environment or in a high-temperature environment. This insulated electrical wire has a conductor core made of a base material, an anodic oxide layer and an oxide, insulating layer. The base material forms a conductor core and has a surface cover of either an aluminum layer or an aluminum alloy layer at least on its outer surface. The anodic oxide layer is formed on the surface layer. The oxide insulating layer is formed on the anodic oxide layer by a sol-gel method or an organic acid salt pyrolytic method. This insulated …
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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 February 13, 1990 and granted September 17, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 13, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 2012.
- 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.