Writing instrument

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 10507684
SERIAL NO

16061881

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A writing implement is provided which is designed to draw lines using capillary action, wherein the width of the line can be freely adjusted while the line is being drawn and it is possible to draw lines of almost the same width at the beginning of the use of the writing implement as at the end of use. A felt-tip pen 1 is provided with an ink reservoir 11, a collector 17, and a core 29 for drawing by capillary action the ink that has been dispensed by the collector 17, dispensing the drawn ink from the tip, and adhering same to a paper surface. Even in repetitive writing, the rate of variability in the width of the lines drawn at the end of use with respect to the width of lines drawn at the beginning of use is 10% or less.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI PENCIL COMPANY LIMITEDTOKYO 140-8537

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Furukawa, Kazuhiko Yokohama, JP 50 277
Inoue, Kensuke Yokohama, JP 8 42
Kobayashi, Yusuke Yokohama, JP 210 868
Nakajima, Tooru Yokohama, JP 16 85

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