Electronically expiring device

Details Electronically expiring device Electronically expiring device

Filed on

2006-05-23

Date issued

2006-05-23

Examiner

Stcyr, Daniel (Department: 2876)

Patent Class

Registers

SubClass

Records

SubSubClass

Conductive

Other Related Categories

C235S487000

Type

Reexamination Certificate

Status

active

Patent number

07048195

Description

ABSTRACT:
The present invention relates to a method and system for expiring a device after a predetermined time period has elapsed. A device, which contains its own internal time cell, is designed to stop working or self-destruct after a predetermined time period has expired. The device uses its own time cell so that the elapsed time period is not altered through an external time source. After the predetermined time period has elapsed, the device or a component of the device self-destructs when connected to a power source.

REFERENCES:
patent: 4546241 (1985-10-01), Walton
patent: 4730285 (1988-03-01), Lie
patent: 6080649 (2000-06-01), Werner et al.
patent: 6303980 (2001-10-01), Werner et al.
patent: 6501107 (2002-12-01), Sinclair et al.
patent: 6705532 (2004-03-01), Broadhurst
U.S. Appl. No. 09/703,340, Berstis et al., Sensing Methods and Devices for Batteryless, Oscillatorless, Binary Time Cell Usable as an Horological Device, filed Oct. 31, 2000.
U.S. Appl. No. 09/703,334, Berstis et al., Sensing Methods and Devices for Batteryless, Oscillatorless, Analog Time Cell Usable as an Horological Device, Oct. 31, 2000.

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