Particles for electro-rheological fluid
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United States of America Patent
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Sep 28, 2004
Grant Date -
Sep 19, 2002
app pub date -
Mar 5, 2002
filing date -
Sep 6, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention can provide particles for electro-rheological fluid for providing a high electro-rheological effect over a wide temperature range at low electric power consumption, and having high strength and excellent durability, not being susceptible to break-up due to the load of stress. Particles for an electro-rheological fluid of the present invention comprise spherical carbonaceous particles, obtained substantially from a solvent and a condensation product of a methylene type bond of aromatic sulfonic acid or a salt thereof.
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