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Expired Canadian patentCanada

Solid-phase analytical device and method for using same

CA 1332807 C · Owner: Brown, William E. Iii · Inventors: Safford, Sarah E.; Brown, William E. Iii; Clemens, John M.

CIPO record

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Abstract From the Canadian patent

A novel material and device useful in solid-phase binding assays to determine the presence or amount of an analyte in a test sample, particularly antigens antibodies, or other ligands or DNA segments. The material and device comprises a reaction site having procedural controls and an analyte binding area capable of being simultaneously contacted by the sample and reagent used in the performance of the assay. The procedural controls and analyte binding areas operate to provide readable results as to the presence or absence of analyte and simultaneously verify the assay procedure and therefore the assay result.

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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 November 1, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 1, 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.
FiledMarch 23, 1989
GrantedNovember 1, 1994
Term endedNovember 1, 2011
Patent numberCA 1332807 C
Classification (IPC)G01N33/55 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedMarch 23, 1989Patent grantedNov 1, 1994Term endedNov 1, 2011

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