发明名称 |
Cholesteric liquid crystal formulations and time/temperature monitoring means |
摘要 |
Described are cholesteric liquid crystal formulations suitable for use as indicators of time and/or temperature, and methods for reliably characterizing and reproducing initial and subsequent batches of such cholesteric liquid crystal formulations. The formulations have a time-dependent, temperature-dependent limit in a pseudo-irreversible liquid crystal phase wherein when said limit is exceeded, the formulations exhibit a color change which is irreversible by cooling.
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申请公布号 |
US4859360(A) |
申请公布日期 |
1989.08.22 |
申请号 |
US19860842631 |
申请日期 |
1986.03.21 |
申请人 |
BIOSYNERGY, INC. |
发明人 |
SUZUKI, FRED K.;MEAD, SHARON M.;YOSHIDA, NOBLE H.;DOBBERSTEIN, ROBERT H. |
分类号 |
G01K11/16 |
主分类号 |
G01K11/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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