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Expired Canadian patentCanada

Food processing vat

CA 2002554 C · Owner: Tetra Laval Holdings & Finance S.A. · Inventors: Jay, Jeffrey L.

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 enclosed food processing vat is provided having two or more generally horizontally-oriented partial cylindrical inner wall sections, each inner wall section conforming to a first portion of an swept volume created by the rotation of an agitator means about a horizontal shaft the distance between, the shafts being slightly greater than the radius of the swept volume so that a second portion of the swept volume for each shaft intersects and overlaps the swept volume of adjacent shafts. Each shaft is provided with a series of combined cutting and stirring paddles comprising a series of blades arranged both perpendicular to the shaft and parallel to the shaft that are sharpened on one side …

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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

  • Filed November 8, 1989 and granted March 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 8, 2009.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 8, 1989
GrantedMarch 16, 1999
Term endedNovember 8, 2009
Patent numberCA 2002554 C
Classification (IPC)A23C19/00 +1 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedNov 8, 1989Patent grantedMarch 16, 1999Term endedNov 8, 2009

Sources & verification

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