Patents by Inventor Etsuko Ueno

Etsuko Ueno 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).

  • Biochemical method for preparation of optically active carnitine Enterobacter sp. Y-239-b
    Patent number: 4636471
    Abstract: L-carnitine is produced by bringing apocarnitine into contact with hydrase produced by a strain of Enterobacter in an aqueous medium having a pH of 4-10 at a temperature of 20.degree.-60.degree. C., whereby apocarnitine is converted to L-carnitine.
    Type: Grant
    Filed: April 5, 1984
    Date of Patent: January 13, 1987
    Assignee: Hamari Chemicals Ltd.
    Inventors: Usao Nakamura, Makoto Takao, Etsuko Ueno, Kichitaro Kawaguchi