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Expired Canadian patentCanada

Fault tolerant radio communication system controller

CA 2115656 C · Owner: Rozenstrauch, Alexander · Inventors: Erickson, Paul M.; Rozenstrauch, Alexander

CIPO record

Overview

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

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Abstract From the Canadian patent

A radio communication system controller (100) includes a first (103) and second (104) processor for processing input communication messages (101) used in a radio communication system. The controller (100) further includes shared memory (105) which memory is accessible to each of the first (103) and second ( 104) processors for storing the input communication messages (101). The controller (100) is further equipped with fault detection capability (107) for determining (402) when a processing fault has occurred.

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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 4, 1993 and granted November 24, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 4, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 4, 1993
GrantedNovember 24, 1998
Term endedJune 4, 2013
Patent numberCA 2115656 C
Classification (IPC)H04B1/74 +2 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedJune 4, 1993Patent grantedNov 24, 1998Term endedJune 4, 2013

Sources & verification

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