Patents by Inventor Kazuko Kondo

Kazuko Kondo 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 the preparation of Dl-.alpha.-tocopherol of high purity
    Patent number: 4217285
    Abstract: A process for preparing high purity dl-.alpha.-tocopherol by condensing trimethylhydroquinone and a phytol in the presence of zinc chloride, a mineral acid and, either silica-alumina or silica gel, or a combination of silica-alumina and silica gel, is described.
    Type: Grant
    Filed: February 13, 1979
    Date of Patent: August 12, 1980
    Assignee: Nisshin Flour Milling Co., Ltd.
    Inventors: Youziro Yoshino, Kazuko Kondo