Patents by Inventor Koji Kubota

Koji Kubota 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 of producing L-carnitine
    Patent number: 4650759
    Abstract: A method for producing L-carnitine which involves contacting crotonbetaine or a non-toxic, soluble salt of this compound with a microorganism or an enzyme fraction of this microorganism which is capable of converting crotonbetaine or its salts into L-carnitine. The conversion is conducted in an aqueous medium under conditions suitable for production of L-carnitine.
    Type: Grant
    Filed: April 13, 1984
    Date of Patent: March 17, 1987
    Assignee: Ajinomoto Company, Incorporated
    Inventors: Kenzo Yokozeki, Koji Kubota
  • 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
  • Method for producing L-aspartic acid by fermentation
    Patent number: 4000040
    Abstract: L-Aspartic acid is produced by culturing an L-aspartic acid producing mutant strain which is resistant to 6-(dimethylamino)-purine and which is derived from a parent strain belonging to the genus Brevibacterium or Corynebacterium in an aqueous culture medium and then recovering the L-aspartic acid which accumulates in the aqueous culture medium.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: December 28, 1976
    Assignee: Ajinomoto Co., Inc.
    Inventors: Takayasu Tsuchida, Koji Kubota, Yoshio Hirose