07463558 is referenced by 13 patents and cites 57 patents.

A timing device for indicating the passage of a duration of time is disclosed. The timing device and system, in accordance with the embodiments of the invention, comprise an electrochemical component which generates a visual and/or audio indication of the passage of time. The timing device further comprises a compensating element, such as a varistor, a thermistor and/or combinations thereof. The compensating element regulates the response of the device with respect to changes in temperature. The timing device is configured to indicate the passage of a single duration of time or comprises zones that are activated in a range of prescribed times and individually or collectively indicate the passage of time or the passage of a range of times.

Title
Timing system and device and method for making the same
Application Number
11/888226
Publication Number
7463558 (B2)
Application Date
July 30, 2007
Publication Date
December 9, 2008
Inventor
Alfred S Braunberger
Thousand Oaks
CA, US
Agent
Haverstock & Owens
Assignee
Vision Works IP Corporation
WA, US
IPC
H04Q 7/28
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