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Expired Canadian patentCanada

Apparatus and process for therapeutic drug assay

CA 1197775 A · Owner: Miles Laboratories, Inc. · Inventors: Johnson, Leighton C.

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Abstract From the Canadian patent

An improved apparatus and method for transferring fluids (48) in a multi-liquid reagent protocol. Serum/ plasma for a therapeutic drug assay is first obtained and mixed with a fluorogenic drug reagent (48) within a first cuvette (38). After mixing, the reaction product is accessed through a small opening (50) by tipping the cuvette (38). Fluid transfer is effected through a capillary tube (12) having an accurately calibrated bore (14), the capillary tube (12) being held between its open distal and proximal ends (30 32) by a gripping sleeve (24). The capillary tube holder (10) is then inserted into a second cuvette where it suspends the capillary tube (12) over the liquid level (54) of a …

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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 December 10, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 10, 2002.
  • 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 31, 1983
GrantedDecember 10, 1985
Term endedDecember 10, 2002
Patent numberCA 1197775 A
Classification (IPC)G01N33/52 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMarch 31, 1983Patent grantedDec 10, 1985Term endedDec 10, 2002

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