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Expired Canadian patentCanada

Method and apparatus for automated assessment of the immunoregulatory status of the mononuclear leukocyte immune system

CA 1296622 C · Owner: Anderson, Jeffrey E. · Inventors: Anderson, Jeffrey E.

CIPO record

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Abstract From the Canadian patent

The ability of mononuclear leukocytes to respond to standard stimuli is measured based on the expression of activation antigens on mononuclear cell subclasses. In a preferred embodiment, a sample of mononuclear leukocytes is cultured for up to 24 hours with a standard stimulus known to activate such cells. After culturing aliquots, of the cells are incubated with fluorophore-conjugated monoclonal antibodies to antigenic determinants of a particular mononuclear subclass and different fluorophore-conjugated monoclonal antibodies to particular activation antigens. The incubated aliquots are analyzed on a flow cytofluorometer, whereby each cell is illuminated with a particular light (e.g. argon …

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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 March 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 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.
FiledAugust 11, 1987
GrantedMarch 3, 1992
Term endedMarch 3, 2009
Patent numberCA 1296622 C
Classification (IPC)G01N33/53 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedAug 11, 1987Patent grantedMarch 3, 1992Term endedMarch 3, 2009

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