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Expired Canadian patentCanada

Nitration of organic compounds

CA 1212954 A · Owner: Interox Chemicals Limited · Inventors: Baulch, Donald L.; Chappel, Jonathan M.; Campbell, Ian M.

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Abstract From the Canadian patent

Nitration of organic compounds. Organic nitrogen compounds are formed in the vapour phase by organic radical formation by reaction of an organic compound, suitably an alkane, with hydroxyl radicals derived from the reaction between hydrogen peroxide and nitrogen dioxide and the nitration of the organic radicals suitably, with nitrogen dioxide. The process is conducted using a molecular oxygen additive which directs the reaction towards the formation of the nitrate corresponding to the organic compound which may predominate in the organic reaction products.

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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 October 21, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 21, 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.
FiledApril 27, 1983
GrantedOctober 21, 1986
Term endedOctober 21, 2003
Patent numberCA 1212954 A
Classification (IPC)C07C201/04 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedApril 27, 1983Patent grantedOct 21, 1986Term endedOct 21, 2003

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