Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Liposomes
Reexamination Certificate
2006-01-17
2006-01-17
Kishore, Gollamudi S. (Department: 1615)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Liposomes
C424S001210, C424S009321, C424S009510, C525S007000, C525S050000, C525S295000, C528S392000
Reexamination Certificate
active
06986902
ABSTRACT:
The present invention relates generally to the amphiphilic polyelectrolyte, poly(2-ethylacrylic acid) and covalently bonded lipids to generate Lipo-PEAA. These Lipo-PEAA are then used to make pH-sensitive liposomes which become unstable, permeable or fusogenic with certain pH changes. In addition, this invention generally describes methods for delivering therapeutic compounds and drugs to target cells by administering to a host the pH-sensitive liposomes of the present invention.
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Chen Tao
Cullis Peter
He Yuehua
Joshi Phalgun
Kim Jung Soo
Inex Pharmaceuticals Corporation
Kishore Gollamudi S.
Oppedahl & Larson LLP
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