Writing instrument for forming thermochromic handwriting

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 10556459
APP PUB NO 20190047318A1
SERIAL NO

16065934

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A writing instrument excellent in handwriting density and temporal stability. The writing instrument includes a ball-point pen tip attached to the front end portion of the ink storage cylinder; and a ball-point pen refill having an ink composition for a writing instrument loaded therein. The ink composition for the writing instrument is a thermochromic ink containing at least a thermochromic microcapsule pigment. The writing instrument includes a pressurization mechanism for applying a pressure to the back end of the ink composition for the writing instrument.

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Patent Owner(s)

Patent OwnerAddress
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION)6-21 KYOBASHI 2-CHOME CHUO-KU TOKYO 1048304 ?1048304

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kajiwara, Takumi Kanagawa-ken, JP 6 9
Masushige, Naoto Kanagawa-ken, JP 6 4

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