Method for producing l-amino acid using bacteria belonging to the genus escherichia
CA 2468178 C · Owner: Ajinomoto Co. Inc. · Inventors: Doroshenko, Vera Georgievna; Ziyatdinov, Mikhail Kharisovich; Livshits, Vitaliy Arkadyevich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An L-amino acid (for example, L-phenylalanine or L-threonine) is produced by culturing in a medium an escherichia, the L-amino acid productivity of which has been enhanced by elevating the activity of a protein encoded by yedA gene and collecting the thus produced and accumulated L-amino acid from the medium.
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 November 21, 2002 and granted June 17, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 21, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2024.
- 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.