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Expired Canadian patentCanada

Automated assay machine and assay tray

CA 1255587 A · Owner: Cetus Corporation · Inventors: Johnson, Larry J.; Coates, Stephen R.; Loor, Rueyming

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

A machine for transferring liquids to and from the wells of a solid phase assay tray includes a horizontally translatable table that holds the tray, a plurality of liquid dispensing manifolds for dispensing liquids into the tray wells and an aspirating manifold for aspirating liquid from the wells. The dispensing and aspirating manifolds are mounted on a vertically translatable head above the table. Each dispensing manifold is equipped with a row of dispensing tubes and is connected via a pump to a liquid container The aspirating manifold is equipped with a row of aspirating tubes and is connected via a pump to a waste liquid receptacle. A microprocessor controls the movements of the table …

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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 June 13, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 13, 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.
FiledSeptember 30, 1985
GrantedJune 13, 1989
Term endedJune 13, 2006
Patent numberCA 1255587 A
Classification (IPC)G01N35/02 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedSep 30, 1985Patent grantedJune 13, 1989Term endedJune 13, 2006

Sources & verification

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