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Expired Canadian patentCanada

Fuel compositions

CA 1270643 C · Owner: Niebylski, Leonard Martin · Inventors: Niebylski, Leonard Martin; Zaweski, Edward Felix

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Abstract From the Canadian patent

Abstract of the Disclosure Coking in and around the injector nozzles of indirect injection compression ignition engines is reduced by means of distillate fuel with which has been blended suitable concentrations of (i) organic nitrate ignition accelerator, and (ii) a mixture of ortho-tert-butylated phenols. Also described are additive mixtures of (i) and (ii) for use in distillate fuels to reduce the coking tendencies of such fuels, especially when used in the operation of indirect injection compression ignition engines.

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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 26, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 26, 2007.
  • 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 28, 1986
GrantedJune 26, 1990
Term endedJune 26, 2007
Patent numberCA 1270643 C
Classification (IPC)C10L1/14 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedAug 28, 1986Patent grantedJune 26, 1990Term endedJune 26, 2007

Sources & verification

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