Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 11, 2017
Patent Application Number
13578387
Date Filed
February 11, 2011
Patent Citations Received
Patent Primary Examiner
Patent abstract
The timing device is a lifetime monitor for indicating when the usable lifetime of a product has ended or for indicating the timing for regular usage of a product. The timing device has a timing initiator, a power supply in the form of a membrane zinc air battery and a visual or audible indicator. The timing initiator is a tear-off air blocking membrane which lets in air when the tear off film is removed. The timing device is capable of indicating a predetermined passage of time which is substantially independent of ambient temperature.
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