Oil-based ink composition for ball-point pen, and oil-based ball-point pen refill using the same

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United States of America Patent

PATENT NO 9333795
APP PUB NO 20150023720A1
SERIAL NO

14383304

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Abstract

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Provided are: an oil-based ink composition for a ball-point pen having a favorable feeling of writing, the favorable deepness of a written trace, favorable light resistance, favorable ink stability over time, and favorable pigment dispersibility; and an oil-based ball-point pen refill using the oil-based ink composition. An oil-based ink composition for a ball-point pen comprising at least a dye, a pigment, and an organic solvent, wherein the dye is at least one salt-forming dye selected from the group consisting of salt-forming dyes of alkylbenzene sulfonic acids and xanthene-based basic dyes, salt-forming dyes of alkylbenzene sulfonic acids and triarylmethane-based basic dyes, and salt-forming dyes of alkylbenzene sulfonic acids and azomethine-based basic dyes.

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Patent Owner(s)

  • KABUSHIKI KAISHA PILOT CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujii, Takeshi Kanagawa-ken, JP 191 2160

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