A method for selecting a preferable wireless communications service provider in a multi-service provider environment
CA 2188329 C · Owner: Bamburak, Michael D. · Inventors: Prise, Michael Edward; Daly, John J.; Bamburak, Michael D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A communication device locates a preferable wireless service provider in a multi- service provider environment using a frequency band search schedule. Initially the communications device registers with a less preferred service provider in a first frequency band. While remaining registered with the less preferred service provider the device examines several frequency bands in the order specified by the frequency band search schedule. A frequency band is examined by dividing the frequency band into many sub- bands and by locating the strongest signal above a threshold within the sub-band being examined. The examination continues until a second frequency band having a more preferred service …
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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 May 1, 2001. 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.