Patents by Inventor Hayao Hirakawa

Hayao Hirakawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for producing L-lysine by fermentation
    Patent number: 4066501
    Abstract: L-lysine produced by Brevibacterium or Corynebacterium mutants that are resistant to .alpha.-aminolauryllactam, .gamma.-methyl-lysine or N.sup..omega. -carbobenzoxy lysine.
    Type: Grant
    Filed: February 22, 1977
    Date of Patent: January 3, 1978
    Assignee: Ajinomoto Co., Inc.
    Inventors: Osamu Tosaka, Hajimu Morioka, Hayao Hirakawa, Kenji Ishii, Koji Kubota, Yoshio Hirose