Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Reexamination Certificate
2007-03-13
2007-03-13
Kim, Vickie (Department: 1618)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
C514S730000, C514S846000
Reexamination Certificate
active
09864083
ABSTRACT:
The present invention addresses the problem of excessive discoloration in hydroquinone compositions of a neutral pH. Antioxidants in the hydroquinone phase and inorganic or amino acyl cationic salts of acidic ascorbyl esters, preferably sodium metabisulfite and magnesium ascorbyl phosphate respectively, are effective in stabilizing such hydroquinone compositions, which are used in treatment of pigmentation disorders. Protected retinoid may be added to these compositions for additional skin benefit effects.
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Gans Eugene H.
Gordon Philip J.
Patel Bhiku G.
Wortzman Mitchell S.
Hank Maryellen Feehery
Kim Vickie
McNichol, Jr. W. J.
Medicis Pharmaceutical Corporation
Reed Smith LLP
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