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Expired Canadian patentCanada

Method of regenetating deteriorated o/w type ultraheavy oil emulsion fuel

CA 1339650 C · Owner: Kao Corporation · Inventors: Moriyama, Noboru; Ogura, Tsugitoshi; Hiraki, Akio

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Abstract From the Canadian patent

An ultraheavy oil emulsion fuel having been deteriorated can be regenerated by, adding 0.01 to 2 parts by weight of a nonionic surfactant having a HLB (hydrophile-lipophile balance) value of 2 to 16 based on 100 parts by weight of the fuel and treating the mixture with a high shear agitation.

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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 February 3, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 3, 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.
FiledJune 5, 1989
GrantedFebruary 3, 1998
Term endedFebruary 3, 2015
Patent numberCA 1339650 C
Classification (IPC)C10L1/32

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedJune 5, 1989Patent grantedFeb 3, 1998Term endedFeb 3, 2015

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