End-of-life bulb circuitry

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United States of America Patent

PATENT NO 9107273
APP PUB NO 20110210669A1
SERIAL NO

13062195

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Abstract

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An LED light bulb which turns itself permanently off when it reaches the end of its useful life, and more particularly, to a scheme which slightly varies the end-of-life condition from unit to unit.

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Patent Owner(s)

Patent OwnerAddress
SWITCH BULB COMPANY INC225 CHARCOT AVENUE SAN JOSE CA 95131

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lenk, Carol Woodstock, US 12 103
Lenk, Ronald J Woodstock, US 48 750
Thorman, Ethan Palo Alto, US 1 0

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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges17073016546291893441601 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +050100150200250300350400450500550600650700750800

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Feb 11, 2027