Drug – bio-affecting and body treating compositions – Topical sun or radiation screening – or tanning preparations
Reexamination Certificate
2007-12-18
2007-12-18
Dodson, Shelley A. (Department: 1616)
Drug, bio-affecting and body treating compositions
Topical sun or radiation screening, or tanning preparations
C424S060000, C424S400000, C424S401000
Reexamination Certificate
active
11052397
ABSTRACT:
The present invention relates to photostable compositions that provide protection from ultraviolet radiation (“UVR”). The invention particularly relates to the sunscreens avobenzone, octocrylene and oxybenzone, forming a triplet combination. Compositions of the present invention are free of diesters or polyesters of naphthalene dicarboxylic acid and also are substantially free of substantial amounts of other sunscreens and substantial amounts of optimizing agents. Sunscreens of the invention may be essentially free of, or free of, lower monohydric alcohol and/or acrylates/C12-22alkylmethacrylate copolymer in an effective non-pilling amount used to gel a C1-C4alcohol. The triplet combination surprisingly provides and substantially maintains the initial SPF value of the sunscreen composition throughout the period of UVR exposure. Compositions of the invention are photostable such that each of sunscreen active in the triplet combination does not appreciably photodegrade. The present invention accurately communicates the amount of UVR photoprotection actually provided in natural sunlight.
REFERENCES:
patent: 6436376 (2002-08-01), Hansenne et al.
Dodson Shelley A.
Paul Louis C.
Tanning Research Laboratories, Inc.
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