07372780 is referenced by 27 patents and cites 50 patents.

A timing device for indicating the passage of a duration of time is disclosed. The timing device in accordance with the embodiments of the invention comprises an electrochemical component that generates a visual and/or audio indication of the passage a duration of time. The electrochemical component preferably comprises two or more electrode structures that sandwich a suitable solid-state electrolyte. In an alternative embodiment of the invention, a timing device comprises an electrochemical component with an indicating electrolyte and an indicating layer that absorbs or reacts with the indicating electrolyte when an electrode material is depleted, providing a visual indication of the passage of a duration time.

Title
Timing system and device and method for making the same
Application Number
10/865724
Publication Number
7372780 (B1)
Application Date
June 9, 2004
Publication Date
May 13, 2008
Inventor
Alfred S Braunberger
Thousand Oaks
CA, US
Agent
Haverstock & Owens
Assignee
Vision Works IP Corporation
CA, US
IPC
H01M 10/48
G01D 21/00
G04F 8/00
G04F 1/00
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