Method for charging a transponder
CA 2220200 A1 · Owner: Ford Motor Company · Inventors: Treharne, William David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for charging a transponder using a transceiver, the method including the steps of powering the transceiver, emitting a transmit pulse from the transceiver, powering the transponder using the transmit pulse, generating a calibration signal with the transponder, transmitting the calibration signal to the transceiver, calibrating the transceiver based on the calibration signal received from the transponder emitting, a charge pulse from the transceiver to the transponder and, charging the transponder with the charge pulse.
Read the whole patent
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 November 5, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 5, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 2019.
- 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.