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Expired Canadian patentCanada

Biological diagnostic device

CA 1291029 C · Owner: Grenner, Gerd · Inventors: Hachmann, Jurgen H.; Grenner, Gerd; Neely, George O.

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 biological diagnostic device and process for efficiently and accurately analyzing for an analyte of interest in a sample of a biological,fluid. The device which in a preferred embodiment is utilized for the analysis of whole blood samples, comprises a diagnostic test element and a sample application unit comprising a filter element and a fluid delivery element which is in fluid contact with the test element. The delivery element comprises a layer having a plurality of grooves or channels, in the surface thereof which is adjacent the filter element. The fluid which passes through the filter is collected in the grooves of the delivery element and subsequently delivered to the test element.

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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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
  • 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 13, 1987
GrantedOctober 22, 1991
Term endedOctober 22, 2008
Patent numberCA 1291029 C
Classification (IPC)G01N33/52 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMarch 13, 1987Patent grantedOct 22, 1991Term endedOct 22, 2008

Sources & verification

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