Pencil lead

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9896591
SERIAL NO

15366228

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Abstract

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A pencil lead includes an organic-inorganic hybrid resin inside fine pores of a porous lead body. A colorant may also be included inside the fine pores. The organic-inorganic hybrid resin is preferably a silica-organic hybrid resin.

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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
Arai, Hiroyuki Fujioka, JP 143 1297
Banzai, Satoru Fujioka, JP 11 13

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