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Expired Canadian patentCanada

Three-phase separation device using doubly-canted decanter

CA 1297044 C · Owner: Kotobuki Iron Works, Ltd. · Inventors: Suzuki, Souroku

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

A solid-and-liquid separation device revolving at high speed, comprising a bowl having a screw therein said bowl, being formed with cylindrical and canted sections thereby, permitting separation of a fluid containing solids into light and heavy liquids and solids.

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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 10, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 10, 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.
FiledDecember 18, 1986
GrantedMarch 10, 1992
Term endedMarch 10, 2009
Patent numberCA 1297044 C
Classification (IPC)B01D21/06 +1 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedDec 18, 1986Patent grantedMarch 10, 1992Term endedMarch 10, 2009

Sources & verification

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