Patents by Inventor Maeda, Shuichi

Maeda, Shuichi 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).

  • Mono-azo compound, mono-azo dye and dyeing process for polyester fibers
    Patent number: 4313731
    Abstract: Mono-azo compounds and mono-azo dyes represented by the following general formula and a dyeing process for polyester fibers using the mono-azo dyes: ##STR1## wherein R.sup.1 and R.sup.2 individually represent hydrogen atom, substituted or non-substituted alkyl group, alkenyl group and cyclohexyl group, R.sup.3 represents hydrogen atom, chlorine atom, bromine atom, alkyl group, substituted or non-substituted alkoxy group or alkenyl group and R.sup.4 represents hydrogen atom, chlorine atom, bromine atom, alkyl group, alkoxy group, hydroxy group, acylamino group, alkoxycarbonylamino group, aralkyloxycarbonylamino group or alkylaminocarbonylamino group.
    Type: Grant
    Filed: September 12, 1980
    Date of Patent: February 2, 1982
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Seiichi Imahori, Kiyoshi Himeno, Maeda, Shuichi