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Expired Canadian patentCanada

Process for upgrading diesel oils

CA 1287007 C · Owner: Ensr Technology, Inc. · Inventors: Kittrell, James R.; Tam, Patrick S.; Darian, Saeed T.

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Abstract From the Canadian patent

A process for upgrading diesel oil to produce an upgraded diesel fuel comprising the steps of: (a) reacting a diesel oil, having a boiling point at normal pressure of about 300°F to about 700°F, derived from a petroleum source with an oxidant selected from the group consisting of nitrogenous oxidizing agents and ozone wherein, (1) the reacting is to an extent sufficient to increase the cetane number of the, diesel oil obtained in step (a) by at least 5 cetane numbers over the cetane number of the diesel oil feed to, step (a) and, (2) (i) the reacting is such that when the oxidant is a nitrogenous treating, agent the amount of oxidant, equivalent on a 100% nitric acid basis, is about 10% or …

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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 July 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 24, 1987
GrantedJuly 30, 1991
Term endedJuly 30, 2008
Patent numberCA 1287007 C
Classification (IPC)C10G53/14 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedFeb 24, 1987Patent grantedJuly 30, 1991Term endedJuly 30, 2008

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