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Expired Canadian patentCanada

System for distributed power management in portable computers

CA 2087767 C · Owner: Novak, Frank P. · Inventors: Lee, Nathan J.; Novak, Frank P.; Sharma, Vikram

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

The present invention provides a system and method for managing power in a portable, pen-based notebook computer. The system and method provides a means for minimizing power consumption by collecting and interpreting power related data at various processing elements while hiding many of the details from the end-user. The present invention is a system and method for monitoring, collecting and acting upon power-related data in portable computer to maximize the amount of time the portable computer can be used between battery re-charging with minimal user intervention. The present invention is comprised of a plurality of independently controllable power planes which are selectively powered so …

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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 January 21, 1993 and granted May 5, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 21, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 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.
FiledJanuary 21, 1993
GrantedMay 5, 1998
Term endedJanuary 21, 2013
Patent numberCA 2087767 C
Classification (IPC)G06F1/32 +2 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedJan 21, 1993Patent grantedMay 5, 1998Term endedJan 21, 2013

Sources & verification

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