Mobile communication termination controlling method and mobile communication termination controlling system
CA 2254403 C · Owner: Nec Corporation · Inventors: Kawabata, Hisashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mobile communication termination controlling method for controlling each of a plurality of mobile stations to which a call is transmitted from a public telephone network connected to a base station, the mobile stations being connected to the base station with a radio circuit is disclosed that comprises, the steps of (a) registering a termination difficulty state to each of the mobile stations when it is predicted that the mobile station will not stably transmit and receive a radio wave, (b) causing a mobile station that has been registered in the termination difficulty state at step (a) and that has a call transmitted from the public telephone network to enter a termination difficulty …
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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 17, 1998 and granted January 8, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 17, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 17, 2020.
- 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.