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Expired Canadian patentCanada

Apparatus for reducing computer system power consumption

CA 1332005 C · Owner: Cepulis, Darren J. · Inventors: Boone, Caroline (A.K.A. Carrie); Garner, Paul M.; Carter, Robert Richard

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

Abstract of the Disclosure, A battery powered computer system which monitors the address bus to determine when selected peripheral devices have not been accessed for a preset amount of time is described. When the preset amount of time has passed the system powers itself down and stops the system clock placing it in a standby mode. The system is awakened by depressing a standby switch, unless there is insufficient energy in the batteries, under which circumstances an AC power source must be connected before the system can be awakened.

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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

  • Granted September 13, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 13, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 25, 1989
GrantedSeptember 13, 1994
Term endedSeptember 13, 2011
Patent numberCA 1332005 C
Classification (IPC)G06F1/32 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedSep 25, 1989Patent grantedSep 13, 1994Term endedSep 13, 2011

Sources & verification

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