Patents by Inventor Eikichi Maekawa

Eikichi Maekawa 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 production of cationic starch
    Patent number: 4632984
    Abstract: The present invention relates to a process for producing novel cationic starch comprising the step of reacting starch having cyanoethyl groups or starch having cyanoethyl groups and quaternary aminoalkyl groups with hydroxylamine or the salts thereof to amidoximate the reaction product.The resulting cationic starch of the invention exhibits significant advantages as compared with those of conventional cationic starch as a dry strengthening agent.
    Type: Grant
    Filed: July 24, 1985
    Date of Patent: December 30, 1986
    Assignee: Kyoritsu Yuki Co., Ltd.
    Inventors: Yoshiki Matsunaga, Toshiaki Sugiyama, Eikichi Maekawa