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Expired Canadian patentCanada

Separator

CA 1317236 C · Owner: Smisson, Robert P. M. · Inventors: Lamb, Timothy J.; Smisson, Robert P. M.

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

SEPARATOR, There is disclosed a separator of the low energy type comprising a cylindrical vessel (1) in which rotational movement of liquid and suspended solids within the vessel (1) is sufficient to cause and enhance an inward sweeping effect towards an annular opening in the base (3) on solids accumulated at the base (3) of the vessel (1), whilst being of sufficiently low energy that separation of the solid components of the liquid in the vessel (1) is brought about primarily by gravity. In order to trap floatables material, a floatables trap (19) is provided inward of an annular dip plate (9) in the vessel (1).

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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 May 4, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 4, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 27, 1989
GrantedMay 4, 1993
Term endedMay 4, 2010
Patent numberCA 1317236 C
Classification (IPC)B01D21/26 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedSep 27, 1989Patent grantedMay 4, 1993Term endedMay 4, 2010

Sources & verification

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