Patents by Inventor Ai Tamakoshi

Ai Tamakoshi 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).

  • Enterobacteriaceae bacteria exhibiting increased L-cysteine producing ability
    Patent number: 9611461
    Abstract: L-cysteine can be produced inexpensively and efficiently by using a bacterium belonging to the family Enterobacteriaceae modified to reduce activity of O-acetylserine sulfhydrylase B thereof, the bacterium being modified so that the C terminal region of its thiosulfate-binding protein is deleted, and the bacterium having an increased ability to produce L-cysteine in the presence of a sulfate.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: April 4, 2017
    Assignee: National University Corporation Nara Institute of Science and Technology
    Inventors: Iwao Ohtsu, Takeshi Nakatani, Ai Tamakoshi, Sayo Takahashi, Hiroshi Takagi