Patents by Inventor Isao Kusumoto

Isao Kusumoto 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).

  • Refining phenylalanine
    Patent number: 4584400
    Abstract: A process for refining phenylalanine, in which a phenylalanine solution containing tyrosine as the main impurity and other impurities is contacted with a non-polar, highly porous synthetic adsorbent, adsorbing phenylalanine on the adsorbent selectively, and eluting and recovering the adsorbed phenylalanine, is disclosed.
    Type: Grant
    Filed: December 6, 1984
    Date of Patent: April 22, 1986
    Assignee: Ajinomoto Co., Inc.
    Inventors: Masaru Otani, Chiaki Sano, Isao Kusumoto