Ink composition, writing instrument and method for producing ink composition

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United States of America Patent

PATENT NO 11697743
APP PUB NO 20210095144A1
SERIAL NO

16464607

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Abstract

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An ink composition contains a carbon black and/or an organic pigment, water, a polysaccharide, two or more of diols, and particles of an acrylic resin. The two or more of diols include a first diol having from 5 to 7 carbon atoms and a second diol having from 1 to 4 carbon atoms, and a content of the first diol in the ink composition is 0.05 wt % or more.

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Patent Owner(s)

Patent OwnerAddress
PENTEL KABUSHIKI KAISHA7-2 NIHONBASHI KOAMI-CHO CHUO-KU TOKYO 103

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Onuki, Sachiko Saitama, JP 1 0
Saitou, Hiroyuki Ibaraki, JP 27 215
Takai, Haruka Saitama, JP 1 0
Yasuike, Kiyonori Saitama, JP 2 8

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