Patents by Inventor Takushige Hadano

Takushige Hadano 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).

  • Disazo compounds containing an alkanolamine substituted triazine component
    Patent number: 3945990
    Abstract: A compound of the formula, as a free acid, ##SPC1##Wherein X is an alkanolamine residue, such as diethanolamine, which is useful for dyeing paper and pulp to give yellow dyeings with good light fastness.
    Type: Grant
    Filed: October 5, 1973
    Date of Patent: March 23, 1976
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Takuo Ikeda, Takushige Hadano, Syunsuke Nogi