Method and device for reducing the current in the neutral conductor
CA 2331710 A1 · Owner: Karlsson, Mats · Inventors: Karlsson, Mats
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for reducing the current in the neutral conductor of an electrical two- or three-phase system comprises: means (21 22, 23) for , measuring the voltage or current of each phase; means (35) for measuring the current in the neutral conductor; multiplying means (31 32, 33) for , multiplying the phase voltage or current of each phase by the current in the neutral conductor; means (42) for feeding back the product of the phase voltage and the current to the load in a negative feedback loop. Said apparatus may also comprise: interface means (21 22, 23) for converting the , measured phase voltages or currents and the neutral current into control signals; and means (107, 109) for …
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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 May 4, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 4, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 4, 2021.
- 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.