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Expired Canadian patentCanada

Immunoassay for htlv-iii antigens

CA 1268419 C · Owner: Abbott Laboratories · Inventors: Paul, Deborah A.

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

Abstract of the Disclosure The invention is a diagnostic immunoassay which detects human T-cell lymphotropic virus-III (HTLV-III) antigen. The immunoassay utilizes a sandwich assay technique and the addition of a labeled second antibody to increase sensitivity.

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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 May 1, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 1, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 18, 1986
GrantedMay 1, 1990
Term endedMay 1, 2007
Patent numberCA 1268419 C
Classification (IPC)G01N33/56 +1 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedSep 18, 1986Patent grantedMay 1, 1990Term endedMay 1, 2007

Sources & verification

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