Patents by Inventor Tsunehide Yoneyama

Tsunehide Yoneyama 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).

  • Aromatic bleaching agent composition
    Patent number: 6645254
    Abstract: One or more 1-substituted-2,2,4-trimethylpentane-3-one derivatives represented by the following general formula (1): wherein X represents a benzene ring or a cyclohexane ring; and R represents an arbitrary hydrogen atom on the benzene ring or cyclohexane ring or a methyl group which substitutes the hydrogen atom are incorporated in a bleaching agent composition containing a chlorine-based bleaching agent component such as sodium hypochlorite or oxygen-based bleaching agent component such as sodium perborate.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: November 11, 2003
    Assignee: Takasago International Corporation
    Inventors: Takashi Aida, Hiroyuki Matsuda, Tsunehide Yoneyama, Toshimitsu Hagiwara