Patents by Inventor Masayuki Miyatake

Masayuki Miyatake 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).

  • Pigment compositions
    Patent number: 3973981
    Abstract: A non-crystallizing and non-flocculating pigment composition comprising as the base material a base organic pigment sch a phthalocyanine and as the additive a specified derivative of a starting organic pigment such as phthalocyanine.
    Type: Grant
    Filed: December 30, 1974
    Date of Patent: August 10, 1976
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Masayuki Miyatake, Sengo Ishizuka, Takao Takagi