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Expired Canadian patentCanada

Hepatitis delta and diagnostics and vaccines

CA 1338800 C · Owner: Overby, Lacy Rasco · Inventors: Choo, Qui-Lim; Overby, Lacy Rasco; Wang, Kang-Sheng

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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 entire genome of the hepatitis D virus has been shown to be a circular single-stranded RNA of 1679 bases. Several open reading frames in both the genomic and complementary strands indicate possible protein products The products encoded in one open reading frame, ORF5, are identified as viral polypeptides p24? and p27?, of which the nuclear ? antigens in HDV infected liver is comprised. These products as, well as others encoded in ORFs 1, 2 6, and 7 are, produced in recombinant expression systems. The ORF5 products. in particular, are useful for HDV diagnosis and vaccines.

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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 December 17, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 17, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 17, 1987
GrantedDecember 17, 1996
Term endedDecember 17, 2013
Patent numberCA 1338800 C
Classification (IPC)C12N15/51 +2 more

Timeline

Timeline From CIPO dates

198819911994199720002003200620092012Application filedJune 17, 1987Patent grantedDec 17, 1996Term endedDec 17, 2013

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