Method for processing nmr data without phase-alternating-pair (pap) averaging
CA 2425944 C · Owner: Baker Hughes Incorporated · Inventors: Chen, Songhua
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
NMR data are acquired using a phase-alternation of the tipping pulse. Differences between consecutive samples (207) acquired with same or different frequencies are determined and an average value of the differences is determined over a sample window (201) and over a range of windows (203,205). This average value, determined separately for the in-phase and quadrature component data is a measure of the systematic noise and may be applied to the in-phase and quadrature component data to give corrected data with a higher resolution than prior art methods of processing phase altered pulse sequence data (figures 4). The method may also be used to improve the resolution of multifrequency …
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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 October 17, 2001 and granted February 15, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 17, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 17, 2023.
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