Patents by Inventor Masae Takeuchi

Masae Takeuchi 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).

  • Process for producing L-threonine by fermentation
    Patent number: 5264353
    Abstract: Microorganisms belonging to the genus Providencia or the genus Escherichia and having a resistance to isoleucine antagonist, produce L-threonine by fermentation in higher yield and in more amount of L-threonine accumulated.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: November 23, 1993
    Assignee: Toray Industries, Inc.
    Inventors: Katsushige Yamada, Hiromi Tsutsui, Kyousuke Yotsumoto, Masae Takeuchi, Makoto Shirai
  • Process for producing D-alanine
    Patent number: 5254464
    Abstract: It is possible to produce and accumulate D-alanine selectively and to improve the amount of production and accumulation of D-alanine by cultivating a microorganism having both an ability to produce D-alanine and a resistance to D-cycloserine and belonging to the genus Brevibacterium.
    Type: Grant
    Filed: August 1, 1991
    Date of Patent: October 19, 1993
    Assignee: Toray Industries, Inc.
    Inventors: Masae Takeuchi, Tetsu Yonehara