Ink composition for aqueous ink ball point pen

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United States of America Patent

PATENT NO 9873806
SERIAL NO

14495471

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Abstract

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Provided are an ink composition for an aqueous ink ball point pen, which contains modified polyvinyl alcohol and at least one selected from boric acid and salts thereof, and an aqueous ink ball point pen charged with the ink composition, wherein the boric acid and the salts thereof are preferably at least one selected from boric acid, alkali metal salts of boric acid and ammonium salts of boric acid.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI PENCIL COMPANY LIMITEDTOKYO 140-8537

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akaki, Tomoyuki Yokohama, JP 1 1
Kobayashi, Yusuke Yokohama, JP 210 868
Sakane, Noriko Yokohama, JP 5 6

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