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Expired Canadian patentCanada

Method for the exploitation of oil shales in heavy fuel fraction cracking

CA 2088172 C · Owner: A.F.S.K. Electrical & Control Engineering Ltd. · Inventors: Gewertz, Moshe

CIPO record

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Abstract From the Canadian patent

The invention relates to a process for the exploitation of oil shales wherein the two main contituents threreof organic and inorganic moieties, are transformed into valuable products, It was found that oil shales which possess a high amount of inorganic constituents as well, as than mineral part resulted from the combustion of oil shales, have a catalytic effect on the cracking of ~ heavy fraction of fuel, producing valuable fractions of hydrocarbon fuel. According to the process a mixture of, oil shales which possess a low portion of organic moiety is cracked at a temperature in the range of 350 to 600°C with a fraction of heavy fuel having a boiling point of above 350°C. From the gases …

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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

  • Filed January 27, 1993 and granted November 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 27, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 27, 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.
FiledJanuary 27, 1993
GrantedNovember 27, 2001
Term endedJanuary 27, 2013
Patent numberCA 2088172 C
Classification (IPC)C10B53/06 +2 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedJan 27, 1993Patent grantedNov 27, 2001Term endedJan 27, 2013

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