Selection-gene-free transgenic plants
CA 2073412 A1 · Owner: Dale, Emily C. · Inventors: Dale, Emily C.; Ow, David W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
29-, Abstract of the Disclosure, Methods and materials for producing transgenic plants which are transgenic only with respect to foreign genes whose inclusion is desired, free of genes which confer selection characteristics. Advantage is taken of systems which mark DNA for excision in combination with enzymes mediating the excision to segregate selectable genes from desired transfer genes. In particular the, cre/lox system of bacteriophage P1 is used as an illustration of this method.
Read the whole patent
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 July 8, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 8, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 8, 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
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.