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|Title:||Photostable cosmetic screening composition containing a UV-A screening agent and an alkyl .beta., .beta.-diphenylacrylate or .alpha.-cyano-.beta. , .beta.-diphenylacrylate|
|Abstract:||A photostable cosmetic screening composition and process for protection of the human epidermis against UV rays of wavelengths between 280 and 380 nm, the composition having, in a cosmetically acceptable vehicle containing at least one fatty phase, 1 to 5% by weight of a dibenzoylmethane derivative and at least 1% by weight of an alkyl .beta.-.beta.-diphenylacrylate or .alpha.-cyano-.beta.-.beta.-diphenylacrylate of formula (I), the mole ratio of the compound of formula (I) to the dibenzoylmethane derivative being not less than 0.8.|
|Inventor(s):||Deflandre; Andre (Orry-la-Ville, FR), Dubois; Michel (Coulommiers, FR), Forestier; Serge (Claye-Souilly, FR), Richard; Herve (Paris, FR)|
|Assignee:||L'Oreal (Paris, FR)|
Patent Claim Types:|
see list of patent claims
|Composition; Compound; Formulation;|
|Foriegn Application Priority Data|
|Foreign Country||Foreign Patent Number||Foreign Patent Date|
|France||90 01761||Feb 14, 1990|
|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
|Argentina||248083||<disabled in preview>|
|Austria||96654||<disabled in preview>|
|Australia||652742||<disabled in preview>|
| This preview shows a limited data set|
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.
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