Magnetic Beads, Magnetic Beads Dispersion Liquid, Method Of Manufacturing Magnetic Beads, And Method Of Manufacturing Magnetic Beads Dispersion Liquid
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United States of America Patent
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Issued Date -
Aug 17, 2023
app pub date -
Feb 14, 2023
filing date -
Feb 15, 2022
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Abstract
Magnetic beads include: a magnetic metal powder; and a coating layer covering a surface of the magnetic metal powder. t/D50, which is a ratio of a thickness t of the coating layer to the magnetic beads diameter D50, is from 0.0001 to 0.05, and a Vickers hardness of the magnetic metal powder is 100 or more.
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