Method and system for trend detection and analysis
CA 2634470 C · Owner: Pratt & Whitney Canada Corp. · Inventors: Nguyen, Phuc Luong; Matschek, Peter; Collin, Denis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and a system for removing very low frequency noise from a time- based data set. The method comprises smoothing the data set to diminish an effect of extraneous data points and obtain smoothed data. The smoothing includes using a Fast Fourier Transform (FFT) algorithm to transfer the time- based data set into a frequency-based data set attenuating low frequencies , of the frequency-based data set; and using an inverse Fourier Transform algorithm to transfer the attenuated frequency-based data set into an attenuated time-based data set.
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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 24, 2003 and granted May 14, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 2025.
- 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.