System for communicating digital cellular data between a cell site and a switching system or another cell site
CA 2118440 C · Owner: Spanke, Ronald Anthony · Inventors: Yu, Hsien-Chuen; Focarile, Joseph Patrick; Spanke, Ronald Anthony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method for delivering packetized data representing radio signals to and from cell sites, and to and from a destination point via a fast packet, network. Each cell site includes an interface for packetizing the radio signals and, transmitting the packetized data to its destination. The destination could be a, delivery point at a switch connected to the telephone network which then , converts, the packetized data into a form usable by the telephone network. Alternatively, the, destination point could be another cell site which then depacketizes the , radio signal and retransmits the radio signal to another wireless communication device without, connecting to the telephone …
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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 19, 1994 and granted May 16, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 19, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 2016.
- 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.