Aphid resistance in composites
CA 2255606 C · Owner: Rijk Zwaan Zaadteelt En Zaadhandel B.V. · Inventors: Jansen, Johannes Petrus Antonius
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to plants of the Compositae family which are resistant to the aphid Nasonovia ribisnigri due to presence in the genome of the Nr resistance gene, wherein the genetic information responsible for the CRA phenotype is absent from the genome of the plant at least to such an extent that the CRA phenotype is not expressed. The plants are for example lettuce plants of the genus Lactuca, in particular L.sativa. L. and can be obtained by selecting a parent plant which is heterozygous for Nr resistance manufacturing , a segregating population producing a progeny of substantially each plant of the segregating population, testing the progeny for resistance and CRA …
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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 June 4, 1997 and granted January 21, 2020. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2019.
- 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
Timeline From CIPO dates
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.