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Expired Canadian patentCanada

Process for converting methanol into olefins

CA 1202986 A · Owner: Mobil Oil Corporation · Inventors: Sapre, Ajit V.; Yurchak, Sergei; Lee, Wooyoung

CIPO record

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Abstract From the Canadian patent

Abstract, In the conversion of methanol into ethylene methanol is, catalytically dehydrated and the ether product is converted into olefins at predetermined conversion over a zeolite catalyst. The zeolite catalyst is arranged as a plurality of beds with alternate cooling zones. The temperature rise in each bed is not greater than the methanol to ethylene sensitivity parameter and each cooling zone reduces the temperature by the same amount. The total number of beds is at least equal to the ratio of total adiabatic temperature increase at the predetermined conversion to the sensitivity parameter.

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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 April 8, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 8, 2003.
  • 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 20, 1983
GrantedApril 8, 1986
Term endedApril 8, 2003
Patent numberCA 1202986 A
Classification (IPC)C07C11/02 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedJan 20, 1983Patent grantedApril 8, 1986Term endedApril 8, 2003

Sources & verification

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