Digital eddycurrent signal processing
CA 2392910 A1 · Owner: Lopez, Estell · Inventors: Lopez, Estell
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A digital synthesizer generates an electrical digital carrier that drives probe coil to, generate an electromagnetic wave propagated into a test material proximate the probe, coil. A return electromagnetic wave generated by eddy currents in the material includes, signatures of material defects modulated on the return carrier electromagnetic wave. The, return wave is detected by one or more probe coils amplified, converted from , an analog, signal to a digital signal and then digitally mixed with digital sine and cosine functions, also generated by the digital synthesizer to yield sum and difference values mathematically expressing various eddy current signals received by the probe in …
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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 July 10, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 10, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2024.
- 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.