Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Reexamination Certificate
2007-12-07
2010-11-02
Seaman, D. Margaret (Department: 1625)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
Reexamination Certificate
active
07825159
ABSTRACT:
The present invention is directed to a mixture of at least two different alkylated phenolphthalein ester compounds. Specifically, the present invention is directed to a mixture of at least two different compounds of formula I:wherein R1represents a straight chain alkyl group having 1 to 11 carbon atoms; R2represents a hydrogen atom or a group of the formula C(O)R4where R4is a hydrogen atom or a straight chain alkyl group having 1 to 11 carbon atoms; X2-X5 independently represent hydrogen; X6-X13 is same or different, and represents hydrogen or a straight or branched chain alkyl group having 1 to 12 carbon atoms. It further relates to a marker composition containing said mixtures dissolved in a solvent.
REFERENCES:
patent: 4163762 (1979-08-01), Rudd
patent: 5672182 (1997-09-01), Smith
patent: 2003/0129758 (2003-07-01), Smith et al.
Desai Bharat
Frederico Justin J.
Hinton Michael P.
Smith Michael J.
Chandrakumar Nizal S
Kelley Drye & Warren LLP
Seaman D. Margaret
United Color Manufacturing Inc.
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