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Expired Canadian patentCanada

Catalytic process for the manufacture of oximes

CA 1279068 C · Owner: Leofanti, Giuseppe · Inventors: Leofanti, Giuseppe; Mantegazza, Maria Angela; Roffia, Paolo

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention concerns a catalytic process for the manufacture of oximes by reaction, in the liquid phase of, the corresponding carbonylic compounds with NH3 and H2O2 in which process the catalyst is substantially consisting of a crystalline material with a zeolitic structure containing silicon and titanium, subjected before use, to, an activating treatment with H2O2.

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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 January 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 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.
FiledJune 9, 1987
GrantedJanuary 15, 1991
Term endedJanuary 15, 2008
Patent numberCA 1279068 C
Classification (IPC)C07C249/04 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJune 9, 1987Patent grantedJan 15, 1991Term endedJan 15, 2008

Sources & verification

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