Patents by Inventor Rie Kawaoka

Rie Kawaoka 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).

  • Method of crystallizing aspartame
    Patent number: 5298648
    Abstract: Aspartame, crystallized in the presence of a crystal growth inhibitor comprising one or more of dipeptides, amino acids, saccharides, organic acids and inorganic salts, has a thick and firm crystal habit. The crystals may be easily separated by solid-liquid separation, and the drying load of them is low. After being dried, the dried aspartame powder may be handled with ease and it has excellent powdery characteristics.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: March 29, 1994
    Assignee: Ajinomoto Co., Inc.
    Inventors: Kazuyoshi Ebisawa, Rie Kawaoka, Nobuya Nagashima, Satoshi Kumon