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Expired Canadian patentCanada

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

CA 1282789 C · Owner: Eastman Kodak Company · Inventors: Steinmetz, Guy Ralph; Rule, Mark

CIPO record

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Abstract From the Canadian patent

Process for the Co-Production of Aromatic Carboxylates and Alkyl Iodides, Disclosed is a process for the co-production of aromatic carboxylic esters and acids and alkyl iodides which is characterized by carbonylating aromatic iodides in the presence of an alkanol and a catalytic amount of a rhodium catalyst under aromatic carboxylic ester and alkyl iodide-forming conditions of temperature and pressure.

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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 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 9, 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.
FiledDecember 23, 1987
GrantedApril 9, 1991
Term endedApril 9, 2008
Patent numberCA 1282789 C
Classification (IPC)C07C19/07 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedDec 23, 1987Patent grantedApril 9, 1991Term endedApril 9, 2008

Sources & verification

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