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Expired Canadian patentCanada

Solid base, process for preparing the same and use of the same in preparation of internal olefins

CA 1306739 C · Owner: Fukao, Masami · Inventors: Fukao, Masami; Suzukamo, Gohfu

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

Abstract:, A solid base, which is obtainable by reacting alumina with an alkali metal hydroxide and an alkali metal hydride or reacting water-containing alurnina with an alkali metal hydride in an amount of more than the molar equivalent of water contained in the water-containing alumina at a, temperature of 200 to 500°C in an inert gas atmosphere can, effectively catalyze various reaction particularly, isomerization of olefins.

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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 August 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 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.
FiledFebruary 15, 1988
GrantedAugust 25, 1992
Term endedAugust 25, 2009
Patent numberCA 1306739 C
Classification (IPC)B01J23/04 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedFeb 15, 1988Patent grantedAug 25, 1992Term endedAug 25, 2009

Sources & verification

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