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Expired Canadian patentCanada

Orthographic flow immunoassays and devices

CA 1304290 C · Owner: Coleman, Patrick F. · Inventors: Maggio, Edward T.; Coleman, Patrick F.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Methods and composition are provided for diagnostic assays, where a sample traverses a bibulous matrix in a first plane and the flow path redirected into a second plane at a binding site, where a signal is created in relation to the presence of analyte. Various protocols may be employed where components of a signal producing system may be combined with the sample, the matrix, or added at the binding site.

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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 30, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 21, 1988
GrantedJune 30, 1992
Term endedJune 30, 2009
Patent numberCA 1304290 C
Classification (IPC)G01N33/55 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedJan 21, 1988Patent grantedJune 30, 1992Term endedJune 30, 2009

Sources & verification

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