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Expired Canadian patentCanada

T-cell lymphotrophic virus protein and assay

CA 1283043 C · Owner: Lee, Tun-Hou · Inventors: Allan, Jonathan S.; Essex, Myron E.; Lee, Tun-Hou

CIPO record

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Abstract From the Canadian patent

Abstract of the Disclosure, Cells infected with HTLV-III yield a protein (p27) having an apparent molecular weight of about 27,000 daltons. The presence in a biological specimen of p27 antigenic determinants, or of antibodies to p27 antigenic determinants is useful information (by itself or as a panel of tests) for predicting the course of HTLV-III infection in seropositive patients. Polypeptides and antibodies used to perform assays to provide that information are disclosed as well as, assays and kits for such assays.

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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 April 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 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.
FiledNovember 6, 1986
GrantedApril 16, 1991
Term endedApril 16, 2008
Patent numberCA 1283043 C
Classification (IPC)C12Q1/70 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedNov 6, 1986Patent grantedApril 16, 1991Term endedApril 16, 2008

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