Registers – Records – Fluorescent – phosphorescent – radiation emitting
Reexamination Certificate
2005-06-21
2005-06-21
Frech, Karl D. (Department: 2876)
Registers
Records
Fluorescent, phosphorescent, radiation emitting
C235S454000, C235S487000
Reexamination Certificate
active
06908035
ABSTRACT:
A system and security card comprising a support substrate having a diffuse layer disposed thereon, the support substrate having a substantially uniform light transmitting characteristic, the lens layer having a predetermined pattern area formed thereon such that when light is transmitted through the support substrate and the diffuse layer a unique pattern is produced that can be read from the light passing there through.
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patent: 4904853 (1990-02-01), Yokokawa
patent: 5272326 (1993-12-01), Fujita et al.
patent: 5283431 (1994-02-01), Rhine
patent: 5729365 (1998-03-01), Sweatt
patent: 5838232 (1998-11-01), Kim et al.
patent: 6176430 (2001-01-01), Finkelstein et al.
Bench Amy L.
Bourdelais Robert P.
Kaminsky Cheryl J.
Patton David L.
Spoonhower John P.
Eastman Kodak Company
Frech Karl D.
Pincelli Frank
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