US Patent 7691525 Secondary battery
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Patent abstract
A secondary battery comprising a heat-sensitive indicator on the outer surface of the battery is disclosed. The color of the heat-sensitive indicator changes according to battery temperature. The heat-sensitive indicator may comprise a sheath. When the internal temperature of the battery increases rapidly, the heat-sensitive indicator changes color to alert the user that the battery is abnormally hot.
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Patent Inventor Names
Jae Chul Um0
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Official Website
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US Patent 07691525 Secondary battery US Patent 7691525 Secondary battery
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Patent Number
07691525
Patent Number
7691525
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US Patent 07691525 Secondary battery
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Is a
Patent jurisdiction
Patent number
07691525
Date of patent
April 6, 2010
Patent application number
11170783
Date Filed
June 28, 2005
Patent primary examiner
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