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Expired Canadian patentCanada

Process for biological production of amides

CA 1298222 C · Owner: Nitto Kagaku Kogyo Kabushiki Kaisha · Inventors: Yamada, Hideaki; Yamada, Hideaki; Nagasawa, Toru

CIPO record

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Abstract From the Canadian patent

In a process for biological production of an amide wherein a nitrile is hydrated into a corresponding amide by the action of a nitrile hydratase originated in a microorganism, the improvement which comprises the use of nitrile hydratase which is obtained by culturing a microorganism of the species Rhodococcus rhodochrous in the presence of a cobalt ion. Aromatic nitriles such as a cyanopyridine as well as aliphatic nitrile such as acrylonitrile are hydrated into the corresponding amides.

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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 March 31, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 15, 1988
GrantedMarch 31, 1992
Term endedMarch 31, 2009
Patent numberCA 1298222 C
Classification (IPC)C12P13/02 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedSep 15, 1988Patent grantedMarch 31, 1992Term endedMarch 31, 2009

Sources & verification

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