Novel bacillus thuringiensis isolates active against phthiraptera pests
CA 2129107 A1 · Owner: Hickle, Leslie A. · Inventors: Payne, Jewel M.; Hickle, Leslie A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods and compositions for the control of lice are described. Specifically Bacillus thuringiensis (B.t.) isolates having anti-lice activity are disclosed. Also described are recombinant hosts which express B.t. genes coding for pesticidal toxins. The B.t. isolates and recombinant proteins are shown to be useful in a method for controlling lice including the sheep louse.
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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 December 31, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 31, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 31, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.