Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Radical -xh acid – or anhydride – acid halide or salt thereof...
Reexamination Certificate
2007-10-16
2007-10-16
Zucker, Paul A. (Department: 1621)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Radical -xh acid, or anhydride, acid halide or salt thereof...
C562S621000, C562S622000
Reexamination Certificate
active
10595124
ABSTRACT:
The present invention provides hydroxamic acid derivatives which have anti-aging efficacy and a method for preparation thereof. It is further provided skin-care external compositions for preventing skin aging, containing the hydroxamic acid derivatives represented by the formula (I) as an active ingredient.
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Baek Heung-Soo
Chae Byung-Geun
Chang Ih-Seop
Cho Jun-Cheol
Choi Gyu-Ho
Amorepacific Corporation
Sughrue & Mion, PLLC
Zucker Paul A.
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