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Expired Canadian patentCanada

Super-heavy oil emulsion fuel

CA 1339651 C · Owner: Moriyama, Noboru · Inventors: Hiraki, Akio; Ogura, Tsugitoshi; Moriyama, Noboru

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Disclosed is an O/W type emulsion fuel comprising A 100 parts by weight of super-heavy oil B 30-80 parts by, weight of water, C a nonionic surface active agent having an HLB value of 9-19 and D an anionic surface active agent a, naturally-occurring hydrophilic polymer substance or a water-soluble synthetic polymer. The emulsion can be formed by mechanically stirring the components and has a low viscosity. By forming the emulsion super-heavy oil such as petroleum-based asphalt or bitumen is made flowable and can be used as a fuel.

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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.
FiledAugust 30, 1989
GrantedFebruary 3, 1998
Term endedFebruary 3, 2015
Patent numberCA 1339651 C
Classification (IPC)C10L1/32

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedAug 30, 1989Patent grantedFeb 3, 1998Term endedFeb 3, 2015

Sources & verification

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