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Expired Canadian patentCanada

Molecular cloning and clones of human b lymphotropic virus (hblv)

CA 1322342 C · Owner: Josephs, Steven Francis · Inventors: Salahuddin, Syed Zaki; Gallo, Robert C.; Wong-Staal, Flossie Yeeching

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Abstract From the Canadian patent

A clone of Human B Lymphotropic Virus (HBLV) pZVH14 has been isolated (from the peripheral blood leukocytes of six individuals) and characterized. The clone is obtained from nucleic acids extracted from purified virus, and contains a 9.0 Kb HindIII fragment of HBLV . HBLV contains a double-stranded DNA genome and is morphologically similar to some members of the Herpes family. The clone is lymphotropic and selectively infects freshly isolated human B cells where it induces, the appearance of characteristic large refractile mononucleated or binucleated host cells. The molecular clone of the present invention is capable of in situ hybridization with host cells infected with HBLV. This clone, …

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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 September 21, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 21, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 11, 1987
GrantedSeptember 21, 1993
Term endedSeptember 21, 2010
Patent numberCA 1322342 C
Classification (IPC)C12N15/86 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedAug 11, 1987Patent grantedSep 21, 1993Term endedSep 21, 2010

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