Patents by Inventor Motoko Takeuchi

Motoko 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).

  • Optical resolution of 4-halogeno-3-alkanoyloxy-butyronitrile
    Patent number: 6395535
    Abstract: A process for preparation of optically active 4-halogeno-3-hydoxybutyronitrile and 4-halogeno-3-alkanoyloxybutyronitrile, which are simply and economically prepared by reacting a racemic 4-halogeno-3-alkanoyloxybutyronitrile with a microorganism such as a strain of the genus Pseudomonas or the genus Enterobacter, which has the activity stereoselectively hydrolyzing the ester portion, its culture broth or an enzyme(s) derived from the microorganism or an enzyme preparation such as a lipase preparation.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: May 28, 2002
    Assignee: Daiso Co., Ltd.
    Inventors: Naoya Kasai, Toshio Suzuki, Hideaki Idogaki, Miki Hatada, Motoko Takeuchi