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Expired Canadian patentCanada

Process for separating arabinose

CA 1288095 C · Owner: Chang, Chin-Hsiung · Inventors: Chang, Chin-Hsiung

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Abstract From the Canadian patent

PROCESS FOR SEPARATING ARABINOSE", ABSTRACT A process for the liquid phase adsorptive separation of arabinose from an aqueous feed mixture of monosaccharides containing arabinose along with other aldopentoses and aldohexoses. The feed is contacted with a calcium-Y or calcium-X type zeolite. Arabinose is selectively adsorbed to the substantial exclusion of other aldoses and thereafter is recovered in high purity by desorption with water or ethanol. The process can be carried out on a commercial scale by means of a simulated moving bed flow scheme.

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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 27, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 27, 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.
FiledMay 11, 1987
GrantedAugust 27, 1991
Term endedAugust 27, 2008
Patent numberCA 1288095 C
Classification (IPC)C07H1/06

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMay 11, 1987Patent grantedAug 27, 1991Term endedAug 27, 2008

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