Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Cyclopentanohydrophenanthrene ring system doai
Reexamination Certificate
2005-08-09
2005-08-09
Badio, Barbara P. (Department: 1616)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Cyclopentanohydrophenanthrene ring system doai
C514S937000
Reexamination Certificate
active
06927213
ABSTRACT:
The present invention discloses compounds which are cationic cholesteryl derivatives having a nitrogen-containing ring structure as their polar head group. These compounds are useful for delivering biologically active substances to cells and for transfecting nucleic acids into cells.
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Deshmukh Hemant M.
Huang Leaf
Badio Barbara P.
University of Pittsburgh
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