Method for producing l-amino acids by fermentation
CA 2319283 A1 · Owner: Kyowa Hakko Kogyo Co. Ltd. · Inventors: Kino, Kuniki; Abe, Tetsuya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides an industrially efficient method for producing an L-amino acid useful as medicament chemical agent, food material and feed additive and the method, comprising culturing in a medium a microorganism having an ability to produce the L-amino acid and having resistance to a DNA gyrase inhibitor or a microorganism having an ability to produce the L-amino acid and having both resistance to a DNA gyrase inhibitor and resistance to an aminoquinoline derivative producing and accumulating the L-amino acid therein and recovering the L-amino acid therefrom.
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 September 14, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 14, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 14, 2022.
- 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.