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Expired Canadian patentCanada

Rhizobium diagnostic sequences

CA 1306962 C · Owner: Agrigenetics Research Associates Limited · Inventors: Watson, John; Schofield, Peter; Shine, John

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Abstract From the Canadian patent

A bacterial strain contains and replicates therein a recombinant DNA plasmid comprising a vector and an RDS (Rhizobium diagnostic segment) derived from a symbiotic Sym plasmid recovered from a nitrogen fixing bacterial species. The disclosure also derives a recombinant DNA plasmid comprising the RDS and the RDS itself. The disclosure further describes a process for identifying the species of an unknown Rhizobium isolate by purifying the DNA of the isolate, cleaving the DNA of the isolate with a restriction endonuclease to generate isolate DNA restriction fragments of various sizes, fractionating the isolate DNA restriction fragments on the basis of molecular size incubating the isolate DNA …

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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 1, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 2009.
  • 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 22, 1984
GrantedSeptember 1, 1992
Term endedSeptember 1, 2009
Patent numberCA 1306962 C
Classification (IPC)C12N15/74 +2 more

Timeline

Timeline From CIPO dates

198519881991199419972000200320062009Application filedNov 22, 1984Patent grantedSep 1, 1992Term endedSep 1, 2009

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