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Expired Canadian patentCanada

Engine control method and apparatus

CA 1237796 A · Owner: General Motors Corporation · Inventors: Pozniak, Donald J.

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: An apparatus and method for controlling an engine operating parameter as a function of at least one engine operating condition by predicting the value of the engine operating condition at a predetermined time in the future, determining the control signal required to establish the corresponding engine operating parameter at the future time and applying the control signal to establish the desired value at a time preceding the future time by an amount of the known system time delay.

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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 June 7, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 16, 1985
GrantedJune 7, 1988
Term endedJune 7, 2005
Patent numberCA 1237796 A
Classification (IPC)F02D41/14 +2 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedAug 16, 1985Patent grantedJune 7, 1988Term endedJune 7, 2005

Sources & verification

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