Patents by Inventor Noriaki Toukai

Noriaki Toukai 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 for producing isonitrosomalonic esters
    Patent number: 3941823
    Abstract: Isonitrosomalonic acid esters, which are useful as a starting material for synthesizing sweet peptides and other chemicals, are prepared by allowing a nitrosating agent to act on a corresponding alkyl alkoxycarbonyl acetoimidate.
    Type: Grant
    Filed: October 18, 1973
    Date of Patent: March 2, 1976
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Naoto Hashimoto, Masaaki Kuritani, Noriaki Toukai