Friction body, writing instrument and writing instrument set

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United States of America Patent

PATENT NO 9592702
APP PUB NO 20080292385A1
SERIAL NO

12124211

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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There is provided a friction body which is adapted to rub a thermochromic image or handwriting formed on a paper surface by use of thermochromic ink to thermally discolor the thermochromic image or handwriting by frictional heat resultant from rubbing, a thermal conductivity of a friction portion of the friction body is set to be within 0.05 W/(m·K) to 50 W/(m·K).

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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
THE PILOT INK CO LTDNAGOYA-SHI AICHI 466-8588

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Okawara, Yoshiaki Nagoya, JP 2 20
Wase, Takashi Nagoya, JP 1 14
Yasuda, Michiyuki Nagoya, JP 11 171

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