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Expired Canadian patentCanada

Vortex-draft-tube mixer for solids and liquids

CA 1263377 C · Owner: Hacheney, Wilfried · Inventors: Hacheney, Wilfried

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

An apparatus for producing high-quality solid-liquid mixtures up to the point of the colloidal system or to the point of coagulation for water, purification, or for introducing gases into liquids includes an intermediate, reservoir that tapers towards the bottom having at least one upper filler, opening and through which the medium flows under gravity in spiral vortices and by a collector tank (6) into which the intermediate reservoir opens out. A receiver drum (1) for the medium that is to be processed precedes the intermediate reservoir (5), this receiver drum (1) having a bottom that is provided with closable drain openings that serve as filler openings. The receiver drum (1), the …

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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 November 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 28, 2006.
  • 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 4, 1984
GrantedNovember 28, 1989
Term endedNovember 28, 2006
Patent numberCA 1263377 C
Classification (IPC)B01F3/12 +2 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedMay 4, 1984Patent grantedNov 28, 1989Term endedNov 28, 2006

Sources & verification

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