Dipole moment detection and localization
CA 2096285 C · Owner: Breed, Ben R. · Inventors: Breed, Ben R.; Eaton, Wilbur W. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An array of magnetic sensors (11) and a digital signal processor (70-80) are used to break a target magnetic dipole field into its components and a magnetic signature, of the present magnetic field is created. Predicted target signatures are precomputed for multiple magnetic orientations of the dipole (13) at each of a plurality of range locations, expressed in terms of Anderson functions (75) which are a set of equations, that decompose the magnetic field in each of the magnetic response locations (12) and, are stored in a lookup table for reference. Input data measured by the sensors are processed and each sensor's magnetic value is predicted to process against background noise using the …
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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, 1993 and granted July 28, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2015.
- 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
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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.