Method for separating multichannel signals produced by ac and dc sources from one another
CA 2553751 C · Owner: Megin Oy · Inventors: Simola, Juha; Taulu, Samu; Kajola, Matti
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 novel manner of measuring DC fields using a multi-channel MEG or MKG measuring instrument; and on the other hand to a , manner of eliminating from the measurement result the interference signals caused by the DC currents. The invention combines the monitoring system of a testee~s movement and the method for motion correction of the measured signals so that the signals produced by the DC currents of a moving testee are visible in the final measurement result as a static signal component in a conventional MEG or MKG measurement. In that case, in the measurement it is not necessary , to beforehand prepare oneself for measuring the DC fields.
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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 January 19, 2005 and granted May 16, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 19, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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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.