Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2006-04-06
2008-07-08
Macchiarolo, Peter (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C313S509000, C313S511000, C445S024000, C427S419100
Reexamination Certificate
active
07397183
ABSTRACT:
A composite article comprises a substrate having at least a substrate surface and a graded-composition coating disposed on a substrate surface. The composition of the coating material varies substantially continuously across its thickness. The coating reduces the transmission rates of oxygen, water vapor, and other chemical species through the substrate such that the composite article can be used effectively as a diffusion barrier to protect chemically sensitive devices or materials. An organic light-emitting device incorporates such a composite article to provide an extended life thereto.
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Flanagan Kevin Warner
Schaepkens Marc
Duane Morris LLP
Macchiarolo Peter
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