Mobile communication system
CA 2220739 A1 · Owner: Kaku, Tomoya · Inventors: Kaku, Tomoya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The object of the present invention is to provide a mobile communication technique, whereby radio communication is performed between a mobile communication terminal such, as a paper (a selective calling system) a portable radio, device, a telephone or a cordless telephone and a base, station that provides a service for the mobile communication terminal, that locally limits or inhibits the operation of a mobile communication terminal, such as the transmission and reception of calls. A communication system comprises: a control signal generator for generating and transmitting a control signal to inhibit or limit the operation of a mobile communication terminal; and a mobile communication …
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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 November 10, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 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.