Patents Assigned to Kaoru Harada
  • Method for producing copoly(amino acid)
    Patent number: 4590260
    Abstract: Copoly(amino acids) are produced by heating a mixture of at least one amino acid with at least one of ammonium malate, ammonium maleate or ammonium fumarate, or ammonium salts of malic, maleic or fumaric acid monoamide, or malic, maleic or fumaric acid monoamide or diamide, and hydrolyzing the reaction mixture under neutral or alkaline condition. The method is simple and easy to handle, and therefore, it is suitable for industrial applications.
    Type: Grant
    Filed: March 8, 1985
    Date of Patent: May 20, 1986
    Assignees: Fuso Chemical Co., Ltd., Kaoru Harada
    Inventors: Kaoru Harada, Akira Shimoyama