Electrostatic radio frequency identification system having contactless programmability
CA 2343365 A1 · Owner: Motorola, Inc. · Inventors: Vega, Victor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A contactless programmable electrostatic RFID apparatus (101 102) that is , cost-effective, has high manufacturability and can be easily packaged for a , wide range of applications is presented. Under the present invention following an exciter signal, a data reader/encoder (101) transmits a write mode data sequence to communicate to a transponder (102) whether to enter into write mode. The modulated write mode data sequence further provides instruction, data, and memory address information for the transponder to use in writing data into its memory. Conversely the transponder interprets the , absence of such write mode data sequence to mean that read mode is desired. Accordingly, read …
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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 September 10, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 10, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2021.
- 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.