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Expired Canadian patentCanada

Screening test for reverse-transcriptase containing virus

CA 1263304 C · Owner: Seto, Belinda P. · Inventors: Gerety, Robert J.; Seto, Belinda P.; Coleman, William G. Jr.

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

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Abstract From the Canadian patent

Screening Test for Reverse-Transcriptase Containing Virus, Abstract, A single step method of screening blood and other sources for the presence of a reverse-transcriptasecontaining virus comprising assaying a sample suspected of containing such a virus for the presence of particleassociated reverse-transcriptase activity.

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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 November 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 28, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 25, 1985
GrantedNovember 28, 1989
Term endedNovember 28, 2006
Patent numberCA 1263304 C
Classification (IPC)G01N33/57 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedOct 25, 1985Patent grantedNov 28, 1989Term endedNov 28, 2006

Sources & verification

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