Methods and apparatus for authenticating articles with luminescent phosphor compounds
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United States of America Patent
Stats
-
Jan 19, 2016
Grant Date -
Jan 17, 2013
app pub date -
Jun 29, 2012
filing date -
Jul 15, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Methods and apparatus for article authentication include an exciting radiation generator that exposes an area of the article to exciting radiation, and at least two radiation detectors that detect emitted radiation from the area in a first band and in a second band that does not overlap the first band. The first band corresponds with a first emission sub-band of an emitting ion, and the second band corresponds with a second emission sub-band of the same emitting ion. A processing system calculates a comparison value that represents a mathematical relationship (e.g., a ratio) between a first intensity of the emitted radiation in the first band with a second intensity of the emitted radiation in the second band, and determines whether the comparison value compares favorably with an authentication parameter. When the comparison value compares favorably with the authentication parameter, the article is identified as being authentic.
First Claim
Other Claims data not available
Family
International Classification(s)
- H01J:ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- F21V:FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES....
- G01J:MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTE....
- G21H:OBTAINING ENERGY FROM RADIOACTIVE SOURCES; APPLICA....
- G21K:TECHNIQUES FOR HANDLING PARTICLES OR ELECTROMAGNET....
- G01N:INVESTIGATING OR ANALYSING MATERIALS BY DETERMININ....
- G07D:SORTING, TESTING, CHANGING, DELIVERING, OR OTHERWI....
- G01T:MEASUREMENT OF NUCLEAR OR X-RADIATION
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- H01J Class
- 20.76 % this patent is cited more than
- 9 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 19, 2027 |
