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Expired Canadian patentCanada

Stabilized suspension of carbon in hydrocarbon fuel and method of preparation

CA 1069155 A · Owner: Keller Corporation (The) · Inventors: Keller, Leonard J.

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Abstract From the Canadian patent

A method of preparing a stabilized suspension of carbon in hydrocarbon fuel characterized by comminuting coal to form predetermined sized particles and coating the particles with at least a coating of an alcohol having 1-4 carbon atoms and thereafter admixing the alcohol coated particles with a liquid hydrocarbon to form the substantially uniform admixture for serving as a fuel. In a preferred embodiment, coal particles are first compacted and comminuted to the predetermined size range to form an abundance of platey lenticular, irregular and angular particles for forming a stabilized suspensoid that exhibits the property of shear thinning so as to be pumpable with a lower apparent viscosity …

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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 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 1, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 1, 1980
Term endedJanuary 1, 1997
Patent numberCA 1069155 A
Classification (IPC)B65G53/30 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 1, 1980Term endedJan 1, 1997

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