WRITING INSTRUMENT COMPRISING A SWITCHABLE FLOW MATERIAL
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United States of America Patent
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Issued Date -
Jun 16, 2022
app pub date -
Dec 9, 2021
filing date -
Dec 9, 2021
priority date (Note) -
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Abstract
The present disclosure relates to a writing instrument comprising a tubular body, a reservoir for an ink composition. The writing instrument comprises a nib comprising a switchable flow material, wherein the switchable flow material is configured to switch between a fluid flow preventing condition and a fluid flow enabling condition by a stimulus. The switchable flow material is configured to control flow of the ink composition from the reservoir to or towards a writing surface.
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