Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2007-10-09
2007-10-09
Koslow, C. Melissa (Department: 1755)
Stock material or miscellaneous articles
Composite
Of inorganic material
C252S301160, C528S278000, C526S192000, C534S016000, C534S015000, C525S191000, C525S201000, C525S221000, C525S223000, C525S227000, C525S418000
Reexamination Certificate
active
10921436
ABSTRACT:
Disclosed are methods of using a transparent, luminescent polymer for transparent marking and/or labeling for identity verification purposes. Also disclosed are sheets, films, markers, labels and taggants comprising transparent, luminescent polymers. Also disclosed are articles labeled with a transparent, luminescent polymer. This invention particularly relates to use of transparent, luminescent polymer compositions comprising ethylene (meth)acrylic acid copolymers and rare earth ions and transparent, luminescent polymer compositions comprising methyl (meth)acrylate/(meth)acrylic acid copolymers, fatty acids and rare earth ions for these purposes.
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E.I. du Pont de Nemours and Company
Koslow C. Melissa
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