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Expired Canadian patentCanada

Test strip incubation device and method

CA 2237663 C · Owner: Christner, James E. · Inventors: Price, Kenneth W.; Christner, James E.

CIPO record

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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 test strip incubation device and method for developing a test strip having a reagent test pad disposed thereon, the reagent test pad requiring an incubation time which allows greater accuracy and reliability of test results as well as a narrower window of PASS and FAIL indication concentrations. The device comprises a test strip holder which allows a wetted reagent test pad to be vertically stored in an enclosed reaction chamber during the incubation period. The reaction chamber is bounded by a substantially clear material to allow the user to easily observe the status of the reagent test pad held in the reaction chamber. The enclosed reaction chamber provides a high humidity environment …

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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 May 14, 1998 and granted January 28, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2020.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 14, 1998
GrantedJanuary 28, 2003
Term endedMay 14, 2018
Patent numberCA 2237663 C
Classification (IPC)G01N31/22 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedMay 14, 1998Patent grantedJan 28, 2003Term endedMay 14, 2018

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