Benzoxazole and benzodiazole UV-A sunscreens

Details Benzoxazole and benzodiazole UV-A sunscreens Benzoxazole and benzodiazole UV-A sunscreens

2003-04-08

2008-08-19

Richter, Johann (Department: 1616)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C548S310700, C548S310400, C548S310700, C514S375000, C514S394000, C514S395000

Reexamination Certificate

active

07414138

ABSTRACT:
The present invention relates to 1,3-benzoxazole or benzodiazole UV-A sunscreens and to compositions, in particular topical compositions, containing the above UV-A sunscreens.

REFERENCES:
patent: 2001/0053856 (2001-12-01), Leduc et al.
patent: 832 641 (1998-04-01), None
patent: 921 126 (1999-06-01), None
Park, K.H. et al., “Second-Order Nonlinear Optical Polymers Based on Benzoxazole Chromophores,”Nonlinear Optics., vol. 20, pp. 73-86 (1999).

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