Transformer/reactor
CA 2256469 A1 · Owner: Abb Ab · Inventors: Leijon, Mats
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a power transformer/reactor (14 15, 16) for , high voltages, comprising at least one winding having at least one currentcarrying conductor. The winding comprises a solid insulation (7) surrounded by outer and inner layers (8, 6) serving for equalization of potential and having semiconducting properties. The layers (6 8) and the insulation (7) adhere , along essentially the whole of its contact surfaces. Said conductor is arranged interiorly of the inner semiconducting layer (6). The outer layer (8) is connected to ground or otherwise relatively low potential. Said solid insulation in the windings constitutes substantially the total electrical …
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 May 27, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 2019.
- 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.