Rheological fluid
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United States of America Patent
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Aug 28, 2001
Grant Date -
N/A
app pub date -
Feb 22, 1999
filing date -
Aug 23, 1996
priority date (Note) -
Expired
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Abstract
A rheological fluid of a bright color which has excellent light resistance and weather resistance, is stable even when used in a high-temperature environment, can be stored over long, and mightily and precisely actuates in response to an electric field or a magnetic field or to both. The rheological fluid comprises a medium in which a film-coated powder comprising a base particle having thereon a coating layer(s) is dispersed.
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