A method and apparatus for selecting an acceptable wireless service provider in a multi-service provider environment using a stored search schedule
CA 2188333 C · Owner: New Cingular Wireless Services, Inc. · Inventors: Lawrence, Christopher Gregory; Daly, John J.; Prise, Michael Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for selecting an acceptable service provider in a multi- service provider environment. Where an acceptable service provider is in order of precedence one that is optimal or preferred as a function of the mobile communications device service subscription. The mobile communications device stores a search schedule used to optimize the scanning of service provider frequencies. Selection of an acceptable service provider begins with examination of the last frequency used by the device. If an acceptable service provider is found on this frequency it is used. Otherwise one is selected by traversing the stored search schedule.
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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 October 21, 1996 and granted August 6, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 21, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 21, 2018.
- 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
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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.