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Expired Canadian patentCanada

Reagent test device containing hydrophobic barriers

CA 1267597 C · Owner: Miles Laboratories, Inc. · Inventors: Wang, Joseph Y.

CIPO record

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Abstract From the Canadian patent

Reagent test device are prepared in which reagent carrier matrices are separated from each other by hydrophobic barrier pads of identical height to the reagent carrier matrices such that liquid present in a reagent matrix material is retained therein and prevented from running over into another reagent matrix area present on the same test device. MS-1417

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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 April 10, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2007.
  • 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 23, 1986
GrantedApril 10, 1990
Term endedApril 10, 2007
Patent numberCA 1267597 C
Classification (IPC)G01N33/52

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedMay 23, 1986Patent grantedApril 10, 1990Term endedApril 10, 2007

Sources & verification

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