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Expired Canadian patentCanada

Multicuvette rotor assembly

CA 1293489 C · Owner: Allegiance Corporation · Inventors: Perry, Matthew James

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

An improved analytical cuvette rotor assembly for use in a centrifugal chemistry analyzer comprising a disc-shaped body having a plurality of radially extending compartments for retaining fluids. Sample fluids and reagent fluids contained in the compartments prior to centrifugation are separated by a novel dam structure extending between upper and lower surfaces of each compartment such that the premature mixing of sample and reagent fluid is significantly retarded. The dam in cooperation with the, compartment walls further defines a fluid transfer passage that permits fluids to be transferred over the dam under analyzer operating rotational speeds.

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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 December 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 24, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 11, 1985
GrantedDecember 24, 1991
Term endedDecember 24, 2008
Patent numberCA 1293489 C
Classification (IPC)G01N21/07

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedJune 11, 1985Patent grantedDec 24, 1991Term endedDec 24, 2008

Sources & verification

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