System for the contactless exchange of data, and responder for use in such a system
CA 2098790 A1 · Owner: Van Zon, Bernardus C. M. · Inventors: Van Zon, Bernardus C. M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Title: System for the contactless exchange of data and, responder for use in such a system. ABSTRACT Disclosed is system for the contactless exchange of data between one or more transmitter/receiver devices and a plurality of responders. According to the invention at least, one of the responders is designed to exchange data via a microwave connection with a transmitter/receiver device operating in the microwave range, and to exchange data via an inductive coupling with an inductively operating transmitter/receiver device.
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 June 18, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 18, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 2015.
- 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.