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Expired Canadian patentCanada

Production of hydrogen peroxide

CA 1317740 C · Owner: Atomic Energy Of Canada Limited · Inventors: Chuang, Karl T.

CIPO record

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Abstract From the Canadian patent

This invention relates to a process for manufacturing hydrogen peroxide by the direct oxidation of hydrogen and oxygen in an acidic aqueous medium. The process comprises supplying a catalyst consisting of at least one group VIII metal on a hydrophobic catalyst, and contacting the catalyst with hydrogen and oxygen in an acidic aqueous solution at a hydrogen partial pressure from about 0.3kPa to 5MPa and an oxygen partial pressure of 20kPa to 5MPa and at a temperature from the freezing point of the aqueous medium to 60°C.

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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 May 18, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 18, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 24, 1988
GrantedMay 18, 1993
Term endedMay 18, 2010
Patent numberCA 1317740 C
Classification (IPC)C01B15/02 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedOct 24, 1988Patent grantedMay 18, 1993Term endedMay 18, 2010

Sources & verification

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