Patents by Inventor Itsumasa Iwamoto

Itsumasa Iwamoto 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 production of stabilized sodium ascorbate powder
    Patent number: 5120762
    Abstract: Ascorbic acid composition comprising a trace amount of an alkli metal compound or an alkaline earth metal compound is very stable with respect to coloring and does not acquire a yellow color even after along time storage.The composition can be easily obtained by addition of only a trace amount of an additive.
    Type: Grant
    Filed: April 11, 1991
    Date of Patent: June 9, 1992
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Tadashi Hanaoka, Sadao Jike, Itsumasa Iwamoto