Patents by Inventor Masae Gomi

Masae Gomi 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).

  • Azo compounds
    Patent number: 4273555
    Abstract: An azo compound which in the free acid form is represented by the following formula: ##STR1## where R.sub.1 stands for methyl, ethyl, R.sub.2 stands for hydrogen, methyl, methoxy or ethoxy, R.sub.3 stands for hydrogen or methyl, and K stands for ##STR2## wherein the benzene nucleus A may be further substituted by methyl, amino, acetylamino or methoxy or: ##STR3## wherein these naphthalene neuclei may be further substituted by hydroxy, amino or acetylamino, also a process for preparing the azo compound and a dyeing method using said azo compound.
    Type: Grant
    Filed: September 7, 1979
    Date of Patent: June 16, 1981
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Yasushi Yamada, Hiroshi Ozawa, Masae Gomi, Hideshiro Nomura