Process for producing amino acid
CA 2048271 C · Owner: Motoyama, Hiroaki · Inventors: Teshiba, Sadao; Anazawa, Hideharu; Motoyama, Hiroaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a process for producing amino acids such as L-threonine and L-lysine, which comprises culturing in a medium containing methanol as a major carbon source a, microorganism which belongs to the genus Methylobacillus and which has an ability to produce the amino acid(s) and resistance to at least one member selected from the group consisting of L-threonine, L-lysine and an amino acid analogue, said microorganism being obtained by mutation of a parent strain which belongs to the genus Methylobacillus and which has an enhanced sensitivity to at least one of an antibiotic and an amino acid analogue; allowing the amino acid(s) to accumulate in the culture; and recovering the amino …
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 August 1, 1991 and granted September 9, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 1, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 1, 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
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.