Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Reexamination Certificate
2004-09-29
2008-12-02
Kelly, Cynthia H (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
C430S363000, C430S945000
Reexamination Certificate
active
07459259
ABSTRACT:
A method of marking a thermoplastic article can comprise: combining a thermoplastic with a light-marking additive to form a composition, forming the composition into an article having a maximum optical absorption wavelength; and illuminating, at a marking wavelength, at least a portion of the article with a device having a power of less than or equal to about 200 mW, to form a light-mark. The light-mark can have a size, as measured along a major axis, of greater than or equal to about 10 micrometers. The light-mark can also have a mark absorption wavelength that is greater than or equal to about ±100 nm of the maximum optical absorption wavelength, and can have a spectral absorption curve.
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English Abstract for EP0190997.
Engel David B.
Gascoyne David G.
Pai-Paranjape Vandita
Potyrailo Radislav A.
Schottland Philippe
Johnson Connie P
Kelly Cynthia H
SABIC Innovative Plastics IP B.V.
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