Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – C-o-group doai
Reexamination Certificate
2008-06-24
2008-06-24
Pryor, Alton (Department: 1616)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
C-o-group doai
C514S730000, C514S731000
Reexamination Certificate
active
07390838
ABSTRACT:
The present invention is directed to crystalline forms of anhydrous 4-cyclopentyl resorcinol, the Form A and C polymorphs, formulations containing at least one of these crystalline forms and their use to lighten skin.
REFERENCES:
patent: 6132740 (2000-10-01), Hu
patent: 2004/0235963 (2004-11-01), Gattrell
U.S. Appl. No. 10/766,078, Gattrell et al.
Benson Gregg C.
Pfizer Inc.
Pryor Alton
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