Plants and tubers expressing patatin and adp-clucose-pyrophosphorylase sequences
CA 2401776 A1 · Owner: Sonnewald, Uwe · Inventors: Sonnewald, Uwe; Willmitzer, Lothar; Muller, Bernd
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Plants are described containing DNA sequences which are capable of modifying the carbohydrate or protein concentration and the carbohydrate or protein composition. DNA sequences described reduce in the plant the ADPglucose-pyrophosphorylase activity and thereby the starch concentration and at the same time increases the mono- and oligosaccharide concentration. Other DNA sequences reduce or increase the protein concentration. Plants that contain these sequences are suitable inter alia for the extraction of sugar or as protein-enriched food or fodder.
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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 April 18, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 18, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 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.
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.