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Expired Canadian patentCanada

Assay for human immunodeficiency virus

CA 1339961 C · Owner: Chesebro, Bruce · Inventors: Chesebro, Bruce; Wehrly, Kathy

CIPO record

Overview

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

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Abstract From the Canadian patent

The assay according to the present invention is a focal immuno assay (FIA) which uses HIV-specific antibodies and indirect immunological assays such as immunocyto-chemistry, autoradiography, or immunofluorescence to detect local areas, or foci, of HIV infection in susceptible target cells growing in monolayers.

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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 July 21, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 21, 2015.
  • 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 14, 1989
GrantedJuly 21, 1998
Term endedJuly 21, 2015
Patent numberCA 1339961 C
Classification (IPC)G01N33/56 +1 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedMarch 14, 1989Patent grantedJuly 21, 1998Term endedJuly 21, 2015

Sources & verification

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