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Expired Canadian patentCanada

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

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract 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.
FiledOctober 19, 1994
GrantedMay 16, 2000
Term endedOctober 19, 2014
Patent numberCA 2118440 C
Classification (IPC)H04B7/26 +2 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedOct 19, 1994Patent grantedMay 16, 2000Term endedOct 19, 2014

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.