A method of subscriber data control in a mobile communication network
CA 2276842 C · Owner: Shimbori, Takateru · Inventors: Shimbori, Takateru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A subscriber data control method in a mobile communication network which reduces the processing load on a mobile switching center and can effectively use the resource of a visitor subscriber data area is provided. the subscriber data of the visitor mobile station is not deleted in response to the subscriber data delete request from its home mobile switching center due to a fact that the visitor mobile station has further moved to another service area and the state of the registered subscriber data of the visitor mobile station is set as the inactive holding state from the active state and thereafter in the case where the visitor mobile station returns to the subject service area within a …
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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 June 30, 1999 and granted September 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 30, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 30, 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.