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Expired Canadian patentCanada

Engine fuel control system

CA 1231158 A · Owner: General Motors Corporation · Inventors: Peden, Richard A.; Ausen, John E.; Ament, Frank

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

Abstract of the Disclosure: A fuel control system for an internal, combustion engine in which the idle fuel quantity is adjusted to maintain a predetermined desired idle speed and in which the transition between the idle fuel quantity and a scheduled off-idle fuel quantity is blended to provide for smooth engine operation.

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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 January 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 5, 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.
FiledMarch 14, 1985
GrantedJanuary 5, 1988
Term endedJanuary 5, 2005
Patent numberCA 1231158 A
Classification (IPC)F02D41/16 +2 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedMarch 14, 1985Patent grantedJan 5, 1988Term endedJan 5, 2005

Sources & verification

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