Security markers for indicating condition of an item

Gary A. Ross; Graham I. Johnson; Barrie Clark; Simon J. Forrest

Security markers for indicating condition of an item

Gary A. Ross (Inventor), Graham I. Johnson (Inventor), Barrie Clark (Inventor), Simon J. Forrest (Inventor)

Research output: Patent

Abstract

A method of indicating the condition of an item comprises illuminating the item to excite one or more photoluminescent markers incorporated within the item. Photoluminescent emission from the markers in response to the excitation is compared to one or more pre-defined photoluminescent signatures indicating different conditions of the item.

Original language	English
Patent number	US 7,378,675 B2
Filing date	2/11/05
Publication status	Published - 27 May 2008
Externally published	Yes

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title = "Security markers for indicating condition of an item",

abstract = "A method of indicating the condition of an item comprises illuminating the item to excite one or more photoluminescent markers incorporated within the item. Photoluminescent emission from the markers in response to the excitation is compared to one or more pre-defined photoluminescent signatures indicating different conditions of the item.",

author = "Ross, {Gary A.} and Johnson, {Graham I.} and Barrie Clark and Forrest, {Simon J.}",

year = "2008",

month = may,

day = "27",

language = "English",

publisher = "USPTO (United States Patent and Trademark Office)",

type = "Patent",

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T1 - Security markers for indicating condition of an item

AU - Ross, Gary A.

AU - Johnson, Graham I.

AU - Clark, Barrie

AU - Forrest, Simon J.

PY - 2008/5/27

Y1 - 2008/5/27

N2 - A method of indicating the condition of an item comprises illuminating the item to excite one or more photoluminescent markers incorporated within the item. Photoluminescent emission from the markers in response to the excitation is compared to one or more pre-defined photoluminescent signatures indicating different conditions of the item.

AB - A method of indicating the condition of an item comprises illuminating the item to excite one or more photoluminescent markers incorporated within the item. Photoluminescent emission from the markers in response to the excitation is compared to one or more pre-defined photoluminescent signatures indicating different conditions of the item.

M3 - Patent

M1 - US 7,378,675 B2

Y2 - 2005/11/02

PB - USPTO (United States Patent and Trademark Office)

ER -

Security markers for indicating condition of an item

Abstract

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