Rare earth metal compounds and mixtures of these

Details Rare earth metal compounds and mixtures of these Rare earth metal compounds and mixtures of these

2007-04-03

2007-04-03

Aulakh, Charanjit S. (Department: 1625)

Compositions

Organic luminescent material containing compositions

Optical brightening compositions

C546S156000, C546S008000, C546S002000, C534S551000, C534S016000, C235S491000, C252S586000, C252S062560

Reexamination Certificate

active

10499865

ABSTRACT:
Rare earth metal compounds are described which, due to their luminescence when irradiated with UV light, are suitable in particular for the marking of security-relevant items, such as documents or data carriers.

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Cul, Jainzhong et al., Chemical Abstracts Service, Columbus, Ohio, XP00223176 Abstract, 963-968 (1987).

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