Transponder with overlapping coil antennas on a common core
CA 2491778 C · Owner: Levin, Michael · Inventors: Altmann, Andres Claudio; Govari, Assaf; Levin, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wireless device includes an antenna assembly including a core and one or more power coils wound around the core on respective power coil axes including at least a first power coil having a first power coil axis. One or more signal coils are wound around the core on respective signal coil axes including at least a first signal coil wound so as to overlap the first power coil the first signal coil having a first signal coil axis that is substantially parallel to the first power coil axis. Power circuitry is coupled to the power coils so as to receive therefrom first radio signals in a first frequency band and to rectify the first radio signals so as to generate a direct current. …
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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 6, 2005 and granted January 5, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 6, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.