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Expired Canadian patentCanada

Adsorbent process

CA 1108063 A · Owner: General Foods Corporation · Inventors: Kramer, Franklin; Garin, Torunn A.; Henig, Yair S.

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 selectivity of an adsorbent for the preferentially adsorbed component of a multi-component solution is improved by means of a countercurrent adsorption process coupled with a reflux operation wherein the loaded adsorption medium which is taken off stream as spent adsorbent is processed to concentrate the preferentially adsorbed component therein.

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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 September 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 1998.
  • 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 10, 1978
GrantedSeptember 1, 1981
Term endedSeptember 1, 1998
Patent numberCA 1108063 A
Classification (IPC)B01D15/00 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedFeb 10, 1978Patent grantedSep 1, 1981Term endedSep 1, 1998

Sources & verification

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