Patents by Inventor Chie Yanase

Chie Yanase 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).

  • Oil ink composition
    Patent number: 5702512
    Abstract: Oil ink composition of the present invention having titanium dioxide as pigment, resin and organic solvent contains a compound (A) which has at least one amide group (--CONH--) or amino group (--N<) and a compound (B) selected from phosphoric acid and phosphate compound. The oil ink composition is suitably used for a writing instrument such as a ball-point pen.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: December 30, 1997
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventors: Masanao Yano, Takeshi Yadoiwa, Chie Yanase