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Expired Canadian patentCanada

Process for the co-production of aromatic carboxylates and alkyl iodides

CA 1280437 C · Owner: Larkins, Thomas Hassell Jr. · Inventors: Rule, Mark; Larkins, Thomas Hassell Jr.; Steinmetz, Guy Ralph

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Abstract From the Canadian patent

Process for the Co-Production of Aromatic Carboxylates and Alkyl lodides, Disclosed is a process for the co-production of aromatic carboxylates and alkyl iodides by the carbonylation of aromatic iodides in the presence of an alkanol and a nickel catalyst.

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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 February 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 2008.
  • 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 18, 1986
GrantedFebruary 19, 1991
Term endedFebruary 19, 2008
Patent numberCA 1280437 C
Classification (IPC)C07C19/07 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedNov 18, 1986Patent grantedFeb 19, 1991Term endedFeb 19, 2008

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