Apparatus and method for imaging the structure of diamagnetic and paramagnetic objects
CA 2103032 C · Owner: Wikswo, John P. Jr. · Inventors: Lauder, Alan; Wikswo, John P. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The surface of internal structure of diamagnetic and paramagnetic materials is imaged by measuring preferably, with a superconducting quantum interference device (SQUID) magnetometer (7), perturbations to an applied magnetic field resulting from variations in magnetic susceptibility at an array of locations across the object (3). The array of perturbation measurements is processed to generate a map of local susceptibilities. For implementation of susceptibility tomography, multiple arrays of perturbation signals for a plurality of relative orientations between the object, the field, and the measurement locations are processed to generate values for local susceptibility at selected sites …
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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 14, 1992 and granted August 5, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2014.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.