Ink composition

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United States of America Patent

PATENT NO 4525216
SERIAL NO

06436686

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An ink composition for a marking pen is disclosed which permits smooth writing even after a long period of standing of the pen with no cap. The ink composition comprises an organic solvent, a pigment, a resin and at least one additive selected from the group consisting of a glyceride of specified structure, and an alkylamide alcohol of specified structure and a sorbitan fatty acid ester. An erasable ink composition for writing on a writing surface such as one of resin is also disclosed, which further includes, in addition to the above, a separating agent which is a non-volatile or only slightly volatile liquid or semi-solid at normal temperatures and has a lower vapor pressure than the solvent, and is soluble in the solvent.

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Patent Owner(s)

  • SAKURA COLOR PRODUCTS CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nakanishi, Mikihiko Kawachi-Nagano, JP 7 158

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