Solid having reversibly invisible/visible thermochromic construction enclosed therein
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United States of America Patent
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Oct 22, 2002
Grant Date -
N/A
app pub date -
Oct 30, 2000
filing date -
Oct 29, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A solid has a reversibly invisible/visible thermochromic internal construction enclosed therein which is composed of a solid made of a transparent resin and a fluorescent internal construction showing the internal structure of the solid enclosed therein, wherein a reversible thermochromic layer containing a reversible thermochromic composition is formed on the surface of the solid, or the transparent resin contains a reversible thermochromic composition.
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