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Expired Canadian patentCanada

Insect-specific paralytic neurotoxin genes for use in biological insect control: methods and composition

CA 2093335 C · Owner: University Of Georgia Research Foundation, Inc. · Inventors: Miller, Lois K.; Tomalski, Michael D.

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Abstract From the Canadian patent

Genes encoding insect-specific paralytic neurotoxins particularly those of insect-parasitic mites including Pyemotes, are, described. Recombinant DNA molecules in which the neurotoxin coding sequences are placed under the control of heterologous promoters are also described, Such molecules are useful for the development of biological insect control agents which produce insect-toxic levels of the neurotoxin. Specifically described are genetically altered baculoviruses which produce insect-specific paralytic neurotoxins and which display improved toxic effect on insects. Insect-toxic compositions are also provided. Methods of insect control using these neurotoxin genes methods for production …

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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

  • Filed October 1, 1991 and granted August 3, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 1, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 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.
FiledOctober 1, 1991
GrantedAugust 3, 1999
Term endedOctober 1, 2011
Patent numberCA 2093335 C
Classification (IPC)C12N15/12 +2 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedOct 1, 1991Patent grantedAug 3, 1999Term endedOct 1, 2011

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