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Expired Canadian patentCanada

INTERFERON .alpha. 61

CA 1282355 C · Owner: Cetus Corporation · Inventors: Innis, Michael A.

CIPO record

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Abstract From the Canadian patent

Abstract, A new polypeptide called IFN-.alpha.61, produced, by E.coli transformed with a newly isolated and characterized human IFN-.alpha. gene is described. The polypeptide exhibits interferon activities such as antiviral activity, cell growth regulation, and regulation of production of cell-produced substances.

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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 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 2, 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.
FiledJanuary 14, 1983
GrantedApril 2, 1991
Term endedApril 2, 2008
Patent numberCA 1282355 C
Classification (IPC)C12N15/00 +2 more

Timeline

Timeline From CIPO dates

198419871990199319961999200220052008Application filedJan 14, 1983Patent grantedApril 2, 1991Term endedApril 2, 2008

Sources & verification

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