Patents Examined by Dinah Lewitan
  • Process for producing L-tryptophan by fermentation
    Patent number: 4560652
    Abstract: A process for economically producing L-tryptophan which involves culturing aerobically in a culture medium a mutant of the genus Bacillus which is resistant to azaserine and a tryptophan analogue and recovering the L-tryptophan produced which accumulates in the culture medium.
    Type: Grant
    Filed: November 24, 1982
    Date of Patent: December 24, 1985
    Assignee: Ajinomoto Co., Inc.
    Inventors: Osamu Kurahashi, Masahiro Kamada, Hitoshi Enei