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Expired Canadian patentCanada

Alkylation of aromatic hydrocarbons

CA 1135286 A · Owner: Mobil Oil Corporation · Inventors: Burress, George T.

CIPO record

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Abstract From the Canadian patent

A process for the liquid phase alkylation of aromatic hydrocarbons with alkylating agents having from one to five, and preferably three to five carbon atoms. The reactants are brought into contact in the liquid phase, with an alkylating agent having from one to five carbon atoms at a temperature between 100°C and 250°C and a pressure at least sufficient to maintain a liquid phase but not greater than 2 x 104 kPa in the presence of a catalyst comprising zeolite ZSM-12.

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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 November 9, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 9, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 7, 1979
GrantedNovember 9, 1982
Term endedNovember 9, 1999
Patent numberCA 1135286 A
Classification (IPC)C07C15/02 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedNov 7, 1979Patent grantedNov 9, 1982Term endedNov 9, 1999

Sources & verification

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