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Expired Canadian patentCanada

Diacritic cracking of hydrocarbon feeds for selective production of ethylene and synthesis gas

CA 1113511 A · Owner: Daly (L.A.) Company · Inventors: Arand, John K. Jr.; Daly, Legrand A.; Guth, Eugene D.

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Abstract From the Canadian patent

The present invention relates to improvements in a commercial process for non-tubular cracking of heavy hydrocarbon feeds for the purposes of producing ethylene and other valuable olefin products as well as chemical grade synthesis gas. The prior art cracking processes fail to present a practical and economical process for producing high yields of ethylene by the diacritic cracking of heavy hydrocarbon feed stocks at elevated Pressures in such a way that the reacotr and subsequent heat exchange equipment will not be adversely affected by severy coking. According to the present invention, a fuel is combusted with oxygen in the first section of the multi zone reactor. The high temperature …

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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 December 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 1, 1998.
  • 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 15, 1979
GrantedDecember 1, 1981
Term endedDecember 1, 1998
Patent numberCA 1113511 A
Classification (IPC)C07C11/04 +1 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedJune 15, 1979Patent grantedDec 1, 1981Term endedDec 1, 1998

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