Patents by Inventor Kiyoo Miyazaki

Kiyoo Miyazaki 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).

  • Separation method of amino acids
    Patent number: 5300653
    Abstract: A method is provided for the separation of at least one aromatic amino acid from an aqueous solution of mixed amino acids including the aromatic amino acid. The aqueous solution is brought into contact with a strongly acidic gel-type cation exchange resin which has been converted into a salt with an alkali metal or an alkaline earth metal, whereby the aromatic amino acid is selectively sorbed by the cation exchange resin. The aromatic amino acid thus sorbed can then be desorbed from the ion exchange resin, preferably with water.
    Type: Grant
    Filed: December 23, 1992
    Date of Patent: April 5, 1994
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Shohei Nozaki, Naohiro Murata, Kiyoo Miyazaki