Writing instrument and ink cartridge

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10000088
SERIAL NO

15023761

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Importance

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Abstract

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A writing instrument includes: a replacement ink cartridge including a bottomed cylindrical container that has an opened front end and a closed rear end and a plug fitted into an inner circumferential surface of an opening of the container; and a projection inserted into the opening of the container to press the plug rearward, thereby opening the plug of the ink cartridge, wherein the projection and the plug are fitted when the plug is press opened, and when the cartridge is replaced, the fitting between the projection and the plug is released and the plug is locked again in the opening of the container.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
KABUSHIKI KAISHA PILOT CORPORATION (ALSO TRADING AS PILOT CORPORATION)TOKYO 104-8304

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hoshino, Takanori Nagoya, JP 7 22

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