Identification tag
CA 2371590 A1 · Owner: Forster, Ian · Inventors: Forster, Ian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An identification tag (300) is provided comprising a multilayer assembly incorporating, in sequence, a metal backing layer (320) a bulk structural , layer (330), a piezo-electric layer (340) and an electrode layer (350). The electrode layer (350) incorporates antennae structures for receiving interrogating radiation comprising a first radiation component at a relatively lower frequency and a second radiation component at a relatively higher frequency. The electrode layer (350) also incorporates a structure (390 400) , for modulating a second signal generated in response to receiving the second component by a first signal generated in response to receiving the first component to …
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 May 15, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 15, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 2022.
- 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.