System and method for multiple antennas having a single core
CA 2542584 C · Owner: Medtronic Minimed, Inc. · Inventors: Morgan, Wayne A.; Hess, Philip B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method for multiple antennas on a single core. The system may include a first core (49), a first winding (42) wound about the first core for transmitting/receiving electromagnetic signals and a second winding (44) for , transmitting/receiving electromagnetic signals wound about the first core and the first winding. The first winding and the second winding may be wound such that a direction of a first magnetic field generated by the first winding is different than a direction of a second magnetic field generated by the second winding. The system may also include activation circuitry connected to the first winding and the second winding. The activation circuitry may …
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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 5, 2004 and granted August 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 5, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 2026.
- 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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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.