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Expired Canadian patentCanada

Apparatus for continuously recovering ethanol from fermentable sugar solutions

CA 1266843 C · Owner: Voest-Alpine Industrieanlagenbau Gmbh · Inventors: Hanke, Reinhart; Cvitas, Vilim; Faltejsek, Karl

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 apparatus for continuously producing ethanol from fermentable sugar solutions comprises a mixing and separating means equipped with rotating plates being inclined relative to the axis of rotation. The charged yeast is extracted from this means and subjected to a multi-stage fermentation within fermentation tubes. Within the fermentation tubes there are again arranged rotating plates which include with the axis as seen in at least, one axial section angles differing from 90°. Within the, fermentation tubes the ethanol is separated via the gaseous phase and the substrate is intensely reacted noting that the pressure, is stepwisely reduced in succeeding fermentation tubes.

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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 March 20, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 20, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 8, 1986
GrantedMarch 20, 1990
Term endedMarch 20, 2007
Patent numberCA 1266843 C
Classification (IPC)C12M1/00 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedApril 8, 1986Patent grantedMarch 20, 1990Term endedMarch 20, 2007

Sources & verification

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